This is mainly a proposal.
The colors at the moment are sometimes quite "loud" and on some it's a bit hard to read the (black) text on it. The colors from the Archimate Specifications (https://pubs.opengroup.org/architecture/archimate3-doc/chap03.html#_Toc10045294) are more subtle and you can better read text on it. It is not necessary to change the colors of the sprites too. But that's just my opinion.
This change will store mindmap source diagram as metadata in PNG images or as
comment in SVG images. It is very useful when only image, not source, is
available and the change to mindmap is required.
This functionality was/is already available for other types of diagrams
but was not working for mindmap.
As described in `help` to retrieve mindmap sources use:
```
java -jar plantuml.jar -metadata <mindmap-image>.png
```
To get the sources from SVG image simply open SVG file in text editor
and copy sources from `comment element` at the end of the file.
http://forum.plantuml.net/8089/hide-footbox-not-recognized-in-timing-diagrams:
When placing "hide footbox" at the beginning of a timing diagram, a
syntax error is reported.
This "hide footbox" is common to all our diagrams (plantuml.cfg file).
------
We have a similar problem with 'hide footbox' in the global config
file; the syntax error is not related to the config file though, you can
place 'hide footbox' directly in the diagram and will get the syntax
error
