It were nice to get the comfort of other Applications by being able to set a keyboardshortcut / press a button in the UI to select the recently used (Main)colour.
And the realization of the colour jitter is just ugly...
IMHO one colourchange per stroke were a good alternative - or just make it optionally if you like it how it is.
And it would be nice to get this little improvements with an update, preferably exceptionally for free ;)
P.s.: Maybe you can do this meanwhile and i was just to blind to find the right switch.
I like Corel Painter and sry for my bad english :D