Change link decorators to fill using the diagram background color instead of always using white.

src/net/sourceforge/plantuml/cucadiagram/LinkDecor.java

@@ -111,7 +111,7 @@ public enum LinkDecor {
 	public ExtremityFactory getExtremityFactory(HColor backgroundColor) {
 		switch (this) {
 		case PLUS:
-			return new ExtremityFactoryPlus();
+			return new ExtremityFactoryPlus(backgroundColor);
 		case REDEFINES:
 			return new ExtremityFactoryExtendsLike(backgroundColor, false);
 		case DEFINEDBY:
@@ -131,11 +131,11 @@ public enum LinkDecor {
 		case DOUBLE_LINE:
 			return new ExtremityFactoryDoubleLine();
 		case CIRCLE_CROSS:
-			return new ExtremityFactoryCircleCross();
+			return new ExtremityFactoryCircleCross(backgroundColor);
 		case ARROW:
 			return new ExtremityFactoryArrow();
 		case ARROW_AND_CIRCLE:
-			return new ExtremityFactoryArrowAndCircle();
+			return new ExtremityFactoryArrowAndCircle(backgroundColor);
 		case NOT_NAVIGABLE:
 			return new ExtremityFactoryNotNavigable();
 		case AGREGATION:
@@ -143,15 +143,15 @@ public enum LinkDecor {
 		case COMPOSITION:
 			return new ExtremityFactoryDiamond(true, backgroundColor);
 		case CIRCLE:
-			return new ExtremityFactoryCircle(false);
+			return new ExtremityFactoryCircle(false, backgroundColor);
 		case CIRCLE_FILL:
-			return new ExtremityFactoryCircle(true);
+			return new ExtremityFactoryCircle(true, backgroundColor);
 		case SQUARE:
-			return new ExtremityFactorySquarre();
+			return new ExtremityFactorySquarre(backgroundColor);
 		case PARENTHESIS:
 			return new ExtremityFactoryParenthesis();
 		case CIRCLE_CONNECT:
-			return new ExtremityFactoryCircleConnect();
+			return new ExtremityFactoryCircleConnect(backgroundColor);
 		default:
 			return null;
 		}

src/net/sourceforge/plantuml/cucadiagram/LinkMiddleDecor.java

@@ -45,18 +45,18 @@ public enum LinkMiddleDecor {
 
 	NONE, CIRCLE, CIRCLE_CIRCLED, CIRCLE_CIRCLED1, CIRCLE_CIRCLED2;
 
-	public MiddleFactory getMiddleFactory(HColor backColor) {
+	public MiddleFactory getMiddleFactory(HColor backColor, HColor diagramBackColor) {
 		if (this == CIRCLE) {
 			return new MiddleFactoryCircle(backColor);
 		}
 		if (this == CIRCLE_CIRCLED) {
-			return new MiddleFactoryCircleCircled(MiddleCircleCircledMode.BOTH, backColor);
+			return new MiddleFactoryCircleCircled(MiddleCircleCircledMode.BOTH, backColor, diagramBackColor);
 		}
 		if (this == CIRCLE_CIRCLED1) {
-			return new MiddleFactoryCircleCircled(MiddleCircleCircledMode.MODE1, backColor);
+			return new MiddleFactoryCircleCircled(MiddleCircleCircledMode.MODE1, backColor, diagramBackColor);
 		}
 		if (this == CIRCLE_CIRCLED2) {
-			return new MiddleFactoryCircleCircled(MiddleCircleCircledMode.MODE2, backColor);
+			return new MiddleFactoryCircleCircled(MiddleCircleCircledMode.MODE2, backColor, diagramBackColor);
 		}
 		throw new UnsupportedOperationException();
 	}

src/net/sourceforge/plantuml/svek/Line.java

@@ -721,7 +721,7 @@ public class Line implements Moveable, Hideable, GuideLine {
 			final PointAndAngle middle = dotPath.getMiddle();
 			final double angleRad = middle.getAngle();
 			final double angleDeg = -angleRad * 180.0 / Math.PI;
-			final UDrawable mi = linkType.getMiddleDecor().getMiddleFactory(arrowLollipopColor)
+			final UDrawable mi = linkType.getMiddleDecor().getMiddleFactory(arrowLollipopColor, backgroundColor)
 					.createUDrawable(angleDeg - 45);
 			mi.drawU(ug.apply(new UTranslate(x + middle.getX(), y + middle.getY())));
 		}

src/net/sourceforge/plantuml/svek/extremity/ExtremityArrowAndCircle.java

@@ -42,6 +42,7 @@ import net.sourceforge.plantuml.ugraphic.UGraphic;
 import net.sourceforge.plantuml.ugraphic.UPolygon;
 import net.sourceforge.plantuml.ugraphic.UStroke;
 import net.sourceforge.plantuml.ugraphic.UTranslate;
+import net.sourceforge.plantuml.ugraphic.color.HColor;
 import net.sourceforge.plantuml.ugraphic.color.HColorUtils;
 
 class ExtremityArrowAndCircle extends Extremity {
@@ -50,15 +51,17 @@ class ExtremityArrowAndCircle extends Extremity {
 	private final Point2D contact;
 	private final Point2D dest;
 	private final double radius = 5;
+	private final HColor backgroundColor;
 
 	@Override
 	public Point2D somePoint() {
 		return contact;
 	}
 
-	public ExtremityArrowAndCircle(Point2D p1, double angle, Point2D center) {
+	public ExtremityArrowAndCircle(Point2D p1, double angle, Point2D center, HColor backgroundColor) {
 		angle = manageround(angle);
 		polygon.addPoint(0, 0);
+		this.backgroundColor = backgroundColor;
 		this.dest = new Point2D.Double(p1.getX(), p1.getY());
 		final int xWing = 9;
 		final int yAperture = 4;
@@ -75,7 +78,7 @@ class ExtremityArrowAndCircle extends Extremity {
 
 	public void drawU(UGraphic ug) {
 		ug.apply(HColorUtils.changeBack(ug)).draw(polygon);
-		ug.apply(new UStroke(1.5)).apply(HColorUtils.WHITE.bg())
+		ug.apply(new UStroke(1.5)).apply(backgroundColor.bg())
 				.apply(new UTranslate(dest.getX() - radius, dest.getY() - radius))
 				.draw(new UEllipse(radius * 2, radius * 2));
 	}

src/net/sourceforge/plantuml/svek/extremity/ExtremityCircle.java

@@ -42,6 +42,7 @@ import net.sourceforge.plantuml.ugraphic.UEllipse;
 import net.sourceforge.plantuml.ugraphic.UGraphic;
 import net.sourceforge.plantuml.ugraphic.UStroke;
 import net.sourceforge.plantuml.ugraphic.UTranslate;
+import net.sourceforge.plantuml.ugraphic.color.HColor;
 import net.sourceforge.plantuml.ugraphic.color.HColorUtils;
 
 class ExtremityCircle extends Extremity {
@@ -49,19 +50,21 @@ class ExtremityCircle extends Extremity {
 	private static final double radius = 6;
 	private final Point2D dest;
 	private final boolean fill;
+	private final HColor backgroundColor;
 
 	@Override
 	public Point2D somePoint() {
 		return dest;
 	}
 
-	public static UDrawable create(Point2D center, boolean fill, double angle) {
+	public static UDrawable create(Point2D center, boolean fill, double angle, HColor backgroundColor) {
-		return new ExtremityCircle(center.getX(), center.getY(), fill, angle);
+		return new ExtremityCircle(center.getX(), center.getY(), fill, angle, backgroundColor);
 	}
 
-	private ExtremityCircle(double x, double y, boolean fill, double angle) {
+	private ExtremityCircle(double x, double y, boolean fill, double angle, HColor backgroundColor) {
 		this.dest = new Point2D.Double(x - radius * Math.cos(angle + Math.PI / 2), y - radius
 				* Math.sin(angle + Math.PI / 2));
+		this.backgroundColor = backgroundColor;
 		this.fill = fill;
 		// contact = new Point2D.Double(p1.getX() - xContact * Math.cos(angle + Math.PI / 2), p1.getY() - xContact
 		// * Math.sin(angle + Math.PI / 2));
@@ -73,7 +76,7 @@ class ExtremityCircle extends Extremity {
 		if (fill) {
 			ug = ug.apply(HColorUtils.changeBack(ug));
 		} else {
-			ug = ug.apply(HColorUtils.WHITE.bg());
+			ug = ug.apply(backgroundColor.bg());
 		}
 
 		ug = ug.apply(new UTranslate(dest.getX() - radius, dest.getY() - radius));

src/net/sourceforge/plantuml/svek/extremity/ExtremityCircleConnect.java

@@ -41,7 +41,7 @@ import net.sourceforge.plantuml.ugraphic.UEllipse;
 import net.sourceforge.plantuml.ugraphic.UGraphic;
 import net.sourceforge.plantuml.ugraphic.UStroke;
 import net.sourceforge.plantuml.ugraphic.UTranslate;
-import net.sourceforge.plantuml.ugraphic.color.HColorUtils;
+import net.sourceforge.plantuml.ugraphic.color.HColor;
 
 class ExtremityCircleConnect extends Extremity {
 
@@ -51,21 +51,23 @@ class ExtremityCircleConnect extends Extremity {
 	private final double radius = 6;
 	private final double radius2 = 10;
 	private final double ortho;
+	private final HColor backgroundColor;
 
 	@Override
 	public Point2D somePoint() {
 		return dest;
 	}
 
-	public ExtremityCircleConnect(Point2D p1, double ortho) {
+	public ExtremityCircleConnect(Point2D p1, double ortho, HColor backgroundColor) {
 		this.px = p1.getX() - radius;
 		this.py = p1.getY() - radius;
 		this.dest = new Point2D.Double(p1.getX(), p1.getY());
 		this.ortho = ortho;
+		this.backgroundColor = backgroundColor;
 	}
 
 	public void drawU(UGraphic ug) {
-		ug = ug.apply(new UStroke(1.5)).apply(HColorUtils.WHITE.bg());
+		ug = ug.apply(new UStroke(1.5)).apply(backgroundColor.bg());
 		ug.apply(new UTranslate(dest.getX() - radius, dest.getY() - radius)).draw(new UEllipse(radius * 2, radius * 2));
 		
 		final double deg = -ortho * 180 / Math.PI + 90 - 45;

src/net/sourceforge/plantuml/svek/extremity/ExtremityCircleCross.java

@@ -42,7 +42,7 @@ import net.sourceforge.plantuml.ugraphic.UGraphic;
 import net.sourceforge.plantuml.ugraphic.ULine;
 import net.sourceforge.plantuml.ugraphic.UStroke;
 import net.sourceforge.plantuml.ugraphic.UTranslate;
-import net.sourceforge.plantuml.ugraphic.color.HColorUtils;
+import net.sourceforge.plantuml.ugraphic.color.HColor;
 
 class ExtremityCircleCross extends Extremity {
 
@@ -50,20 +50,22 @@ class ExtremityCircleCross extends Extremity {
 	private final double py;
 	private final Point2D dest;
 	private final double radius = 7;
+	private final HColor backgroundColor;
 
 	@Override
 	public Point2D somePoint() {
 		return dest;
 	}
 
-	public ExtremityCircleCross(Point2D p1) {
+	public ExtremityCircleCross(Point2D p1, HColor backgroundColor) {
 		this.px = p1.getX() - radius;
 		this.py = p1.getY() - radius;
 		this.dest = new Point2D.Double(p1.getX(), p1.getY());
+		this.backgroundColor = backgroundColor;
 	}
 
 	public void drawU(UGraphic ug) {
-		ug = ug.apply(HColorUtils.WHITE.bg());
+		ug = ug.apply(backgroundColor.bg());
 		ug.apply(new UStroke(1.5)).apply(new UTranslate(dest.getX() - radius, dest.getY() - radius)).draw(new UEllipse(radius * 2, radius * 2));
 		drawLine(ug, 0, 0, getPointOnCircle(Math.PI / 4), getPointOnCircle(Math.PI + Math.PI / 4));
 		drawLine(ug, 0, 0, getPointOnCircle(-Math.PI / 4), getPointOnCircle(Math.PI - Math.PI / 4));

src/net/sourceforge/plantuml/svek/extremity/ExtremityFactoryArrowAndCircle.java

@@ -40,12 +40,18 @@ import java.awt.geom.Point2D;
 import net.sourceforge.plantuml.graphic.UDrawable;
 import net.sourceforge.plantuml.svek.AbstractExtremityFactory;
 import net.sourceforge.plantuml.svek.Side;
+import net.sourceforge.plantuml.ugraphic.color.HColor;
 
 public class ExtremityFactoryArrowAndCircle extends AbstractExtremityFactory implements ExtremityFactory {
+	private final HColor backgroundColor;
+
+	public ExtremityFactoryArrowAndCircle(HColor backgroundColor) {
+		this.backgroundColor = backgroundColor;
+	}
 
 	public UDrawable createUDrawable(Point2D p0, Point2D p1, Point2D p2, Side side) {
 		final double ortho = atan2(p0, p2);
 		final Point2D center = new Point2D.Double((p0.getX() + p2.getX()) / 2, (p0.getY() + p2.getY()) / 2);
-		return new ExtremityArrowAndCircle(p1, ortho, center);
+		return new ExtremityArrowAndCircle(p1, ortho, center, backgroundColor);
 	}
 }

src/net/sourceforge/plantuml/svek/extremity/ExtremityFactoryCircle.java

@@ -40,24 +40,27 @@ import java.awt.geom.Point2D;
 import net.sourceforge.plantuml.graphic.UDrawable;
 import net.sourceforge.plantuml.svek.AbstractExtremityFactory;
 import net.sourceforge.plantuml.svek.Side;
+import net.sourceforge.plantuml.ugraphic.color.HColor;
 
 public class ExtremityFactoryCircle extends AbstractExtremityFactory implements ExtremityFactory {
 
 	private final boolean fill;
+	private final HColor backgroundColor;
 
-	public ExtremityFactoryCircle(boolean fill) {
+	public ExtremityFactoryCircle(boolean fill, HColor backgroundColor) {
 		this.fill = fill;
+		this.backgroundColor = backgroundColor;
 	}
 
 	@Override
 	public UDrawable createUDrawable(Point2D center, double angle, Side side) {
 		angle -= Math.PI / 2;
-		return ExtremityCircle.create(center, fill, angle);
+		return ExtremityCircle.create(center, fill, angle, backgroundColor);
 	}
 
 	public UDrawable createUDrawable(Point2D p0, Point2D p1, Point2D p2, Side side) {
 		final double ortho = atan2(p0, p2);
-		return ExtremityCircle.create(p1, fill, ortho);
+		return ExtremityCircle.create(p1, fill, ortho, backgroundColor);
 	}
 
 }

src/net/sourceforge/plantuml/svek/extremity/ExtremityFactoryCircleConnect.java

@@ -40,18 +40,25 @@ import java.awt.geom.Point2D;
 import net.sourceforge.plantuml.graphic.UDrawable;
 import net.sourceforge.plantuml.svek.AbstractExtremityFactory;
 import net.sourceforge.plantuml.svek.Side;
+import net.sourceforge.plantuml.ugraphic.color.HColor;
 
 public class ExtremityFactoryCircleConnect extends AbstractExtremityFactory implements ExtremityFactory {
 
+	private final HColor backgroundColor;
+
+	public ExtremityFactoryCircleConnect(HColor backgroundColor) {
+		this.backgroundColor = backgroundColor;
+	}
+
 	@Override
 	public UDrawable createUDrawable(Point2D p0, double angle, Side side) {
 		angle -= Math.PI / 2;
-		return new ExtremityCircleConnect(p0, angle);
+		return new ExtremityCircleConnect(p0, angle, backgroundColor);
 	}
 
 	public UDrawable createUDrawable(Point2D p0, Point2D p1, Point2D p2, Side side) {
 		final double ortho = atan2(p0, p2);
-		return new ExtremityCircleConnect(p1, ortho);
+		return new ExtremityCircleConnect(p1, ortho, backgroundColor);
 	}
 
 }

src/net/sourceforge/plantuml/svek/extremity/ExtremityFactoryCircleCross.java

@@ -40,12 +40,19 @@ import java.awt.geom.Point2D;
 import net.sourceforge.plantuml.graphic.UDrawable;
 import net.sourceforge.plantuml.svek.AbstractExtremityFactory;
 import net.sourceforge.plantuml.svek.Side;
+import net.sourceforge.plantuml.ugraphic.color.HColor;
 
 public class ExtremityFactoryCircleCross extends AbstractExtremityFactory implements ExtremityFactory {
 
+	private final HColor backgroundColor;
+
+	public ExtremityFactoryCircleCross(HColor backgroundColor) {
+		this.backgroundColor = backgroundColor;
+	}
+
 	public UDrawable createUDrawable(Point2D p0, Point2D p1, Point2D p2, Side side) {
 		// final double ortho = atan2(p0, p2);
-		return new ExtremityCircleCross(p1);
+		return new ExtremityCircleCross(p1, backgroundColor);
 	}
 
 }

src/net/sourceforge/plantuml/svek/extremity/ExtremityFactoryPlus.java

@@ -40,17 +40,24 @@ import java.awt.geom.Point2D;
 import net.sourceforge.plantuml.graphic.UDrawable;
 import net.sourceforge.plantuml.svek.AbstractExtremityFactory;
 import net.sourceforge.plantuml.svek.Side;
+import net.sourceforge.plantuml.ugraphic.color.HColor;
 
 public class ExtremityFactoryPlus extends AbstractExtremityFactory implements ExtremityFactory {
 
+	private final HColor backgroundColor;
+
+	public ExtremityFactoryPlus(HColor backgroundColor) {
+		this.backgroundColor = backgroundColor;
+	}
+
 	@Override
 	public UDrawable createUDrawable(Point2D center, double angle, Side side) {
-		return ExtremityPlus.create(center, angle - Math.PI / 2);
+		return ExtremityPlus.create(center, angle - Math.PI / 2, backgroundColor);
 	}
 
 	public UDrawable createUDrawable(Point2D p0, Point2D p1, Point2D p2, Side side) {
 		final double ortho = atan2(p0, p2);
-		return ExtremityPlus.create(p1, ortho);
+		return ExtremityPlus.create(p1, ortho, backgroundColor);
 	}
 
 }

src/net/sourceforge/plantuml/svek/extremity/ExtremityFactorySquarre.java

@@ -40,17 +40,24 @@ import java.awt.geom.Point2D;
 import net.sourceforge.plantuml.graphic.UDrawable;
 import net.sourceforge.plantuml.svek.AbstractExtremityFactory;
 import net.sourceforge.plantuml.svek.Side;
+import net.sourceforge.plantuml.ugraphic.color.HColor;
 
 public class ExtremityFactorySquarre extends AbstractExtremityFactory implements ExtremityFactory {
 
+	private final HColor backgroundColor;
+
+	public ExtremityFactorySquarre(HColor backgroundColor) {
+		this.backgroundColor = backgroundColor;
+	}
+
 	@Override
 	public UDrawable createUDrawable(Point2D p0, double angle, Side side) {
-		return new ExtremitySquarre(p0);
+		return new ExtremitySquarre(p0, backgroundColor);
 		}
 
 	public UDrawable createUDrawable(Point2D p0, Point2D p1, Point2D p2, Side side) {
 		// final double ortho = atan2(p0, p2);
-		return new ExtremitySquarre(p1);
+		return new ExtremitySquarre(p1, backgroundColor);
 	}
 
 }

src/net/sourceforge/plantuml/svek/extremity/ExtremityPlus.java

@@ -42,7 +42,7 @@ import net.sourceforge.plantuml.ugraphic.UEllipse;
 import net.sourceforge.plantuml.ugraphic.UGraphic;
 import net.sourceforge.plantuml.ugraphic.ULine;
 import net.sourceforge.plantuml.ugraphic.UTranslate;
-import net.sourceforge.plantuml.ugraphic.color.HColorUtils;
+import net.sourceforge.plantuml.ugraphic.color.HColor;
 
 class ExtremityPlus extends Extremity {
 
@@ -51,12 +51,14 @@ class ExtremityPlus extends Extremity {
 	private final double py;
 	private static final double radius = 8;
 	private final double angle;
+	private final HColor backgroundColor;
 
-	private ExtremityPlus(double x, double y, double angle) {
+	private ExtremityPlus(double x, double y, double angle, HColor backgroundColor) {
 		this.angle = angle;
 		this.circle = new UEllipse(2 * radius, 2 * radius);
 		this.px = x;
 		this.py = y;
+		this.backgroundColor = backgroundColor;
 	}
 	
 	@Override
@@ -65,14 +67,14 @@ class ExtremityPlus extends Extremity {
 	}
 
 
-	public static UDrawable create(Point2D p1, double angle) {
+	public static UDrawable create(Point2D p1, double angle, HColor backgroundColor) {
 		final double x = p1.getX() - radius + radius * Math.sin(angle);
 		final double y = p1.getY() - radius - radius * Math.cos(angle);
-		return new ExtremityPlus(x, y, angle);
+		return new ExtremityPlus(x, y, angle, backgroundColor);
 	}
 
 	public void drawU(UGraphic ug) {
-		ug.apply(HColorUtils.WHITE.bg()).apply(new UTranslate(px + 0, py + 0)).draw(circle);
+		ug.apply(backgroundColor.bg()).apply(new UTranslate(px + 0, py + 0)).draw(circle);
 		drawLine(ug, 0, 0, getPointOnCircle(angle - Math.PI / 2), getPointOnCircle(angle + Math.PI / 2));
 		drawLine(ug, 0, 0, getPointOnCircle(angle), getPointOnCircle(angle + Math.PI));
 	}

src/net/sourceforge/plantuml/svek/extremity/ExtremitySquarre.java

@@ -41,10 +41,11 @@ import net.sourceforge.plantuml.ugraphic.UGraphic;
 import net.sourceforge.plantuml.ugraphic.URectangle;
 import net.sourceforge.plantuml.ugraphic.UStroke;
 import net.sourceforge.plantuml.ugraphic.UTranslate;
-import net.sourceforge.plantuml.ugraphic.color.HColorUtils;
+import net.sourceforge.plantuml.ugraphic.color.HColor;
 
 class ExtremitySquarre extends Extremity {
 
+	private final HColor backgroundColor;
 	private final Point2D dest;
 	private final double radius = 5;
 
@@ -53,12 +54,13 @@ class ExtremitySquarre extends Extremity {
 		return dest;
 	}
 
-	public ExtremitySquarre(Point2D p1) {
+	public ExtremitySquarre(Point2D p1, HColor backgroundColor) {
 		this.dest = new Point2D.Double(p1.getX(), p1.getY());
+		this.backgroundColor = backgroundColor;
 	}
 
 	public void drawU(UGraphic ug) {
-		ug.apply(new UStroke(1.5)).apply(HColorUtils.WHITE.bg()).apply(new UTranslate(dest.getX() - radius, dest.getY() - radius)).draw(new URectangle(radius * 2, radius * 2));
+		ug.apply(new UStroke(1.5)).apply(backgroundColor.bg()).apply(new UTranslate(dest.getX() - radius, dest.getY() - radius)).draw(new URectangle(radius * 2, radius * 2));
 	}
 
 }

src/net/sourceforge/plantuml/svek/extremity/MiddleCircleCircled.java

@@ -46,7 +46,7 @@ import net.sourceforge.plantuml.ugraphic.color.HColorUtils;
 
 class MiddleCircleCircled extends Extremity {
 
-	private final HColor diagramBackColor = HColorUtils.WHITE;
+	private final HColor diagramBackColor;
 	private final double angle;
 	private final MiddleCircleCircledMode mode;
 	private final double radius1 = 6;
@@ -56,10 +56,11 @@ class MiddleCircleCircled extends Extremity {
 	private final UEllipse bigcircle = new UEllipse(2 * radius2, 2 * radius2);
 	private final HColor backColor;
 
-	public MiddleCircleCircled(double angle, MiddleCircleCircledMode mode, HColor backColor) {
+	public MiddleCircleCircled(double angle, MiddleCircleCircledMode mode, HColor backColor, HColor diagramBackColor) {
 		this.angle = angle;
 		this.mode = mode;
 		this.backColor = backColor;
+		this.diagramBackColor = diagramBackColor;
 	}
 
 	@Override

src/net/sourceforge/plantuml/svek/extremity/MiddleFactoryCircleCircled.java

@@ -42,14 +42,16 @@ public class MiddleFactoryCircleCircled implements MiddleFactory {
 
 	private final MiddleCircleCircledMode mode;
 	private final HColor backColor;
+	private final HColor diagramBackColor;
 
-	public MiddleFactoryCircleCircled(MiddleCircleCircledMode mode, HColor backColor) {
+	public MiddleFactoryCircleCircled(MiddleCircleCircledMode mode, HColor backColor, HColor diagramBackColor) {
 		this.mode = mode;
 		this.backColor = backColor;
+		this.diagramBackColor = diagramBackColor;
 	}
 
 	public UDrawable createUDrawable(double angle) {
-		return new MiddleCircleCircled(angle, mode, backColor);
+		return new MiddleCircleCircled(angle, mode, backColor, diagramBackColor);
 	}
 
 }