This is a patch on top of my custom colors patch.
The shared/global assistant color for painting assistants is stored outside of the assistant data model. Because of this I had to add a new property to save to in the KRA saver and loader.
I also had to fix up a few initialization areas in the UI so the loaded values didn't get wiped out.
I also removed a couple "legacy" comments in the KRA saver that got me confused. boud confirmed that those notes were in the calligra days