Integration of themes from future-architect

Adapted from https://github.com/future-architect/puml-themes/tree/master/themes

themes/puml-theme-vibrant.puml

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+''
+'' The vibrant theme from https://github.com/future-architect/puml-themes
+'' 
+'' Original Author: [future-architect](https://github.com/future-architect)
+'' Source: [future-architect/puml-themes](https://github.com/future-architect/puml-themes/tree/master/themes)
+'' License: [Apache License, Version 2.0](https://github.com/future-architect/puml-themes/blob/master/LICENSE) 
+''
+skinparam BackgroundColor FFFFFF
+skinparam shadowing false
+skinparam RoundCorner 7
+skinparam ArrowColor 454645
+skinparam FontColor 454645
+skinparam SequenceLifeLineBorderColor 696969
+skinparam SequenceGroupHeaderFontColor 454645
+skinparam SequenceGroupFontColor 696969
+skinparam SequenceGroupBorderColor 696969
+skinparam SequenceGroupBorderThickness 1
+
+skinparam sequenceDivider {
+    BorderColor 454645
+    BorderThickness 1
+    FontColor 454645
+}
+
+skinparam participant {
+    BackgroundColor FF6347
+    BorderColor FF6F61
+    FontColor FFFFFF
+}
+
+skinparam database {
+    BackgroundColor 00FFFF
+    BorderColor 454645
+    FontColor 454645
+}
+
+skinparam entity {
+    BackgroundColor FFE552
+    BorderColor 454645
+    FontColor 454645
+}
+
+skinparam note {
+    BackgroundColor 7FFFD4
+    BorderColor 7FFFD4
+    FontColor 454645
+}
+
+skinparam actor {
+    BackgroundColor 454645
+    BorderColor 454645
+    FontColor 454645
+}
+
+skinparam boundary {
+    BackgroundColor FFE552
+    BorderColor 454645
+    FontColor 454645
+}
+
+skinparam control {
+    BackgroundColor FFE552
+    BorderColor 454645
+    FontColor 454645
+}
+
+skinparam collections {
+    BackgroundColor FF6347
+    BorderColor FFFFFF
+    FontColor 454645
+}