Turned out more dificult than I expected but wtill interesting.I'd suggest adding hotkeys for coler selection. I think that would make mixing easier to do.
thank you for the comments, in case you would have an idea of how you would like this shortcut keys so that I can study
I think anything would work just fine.[Q,W,E] for main clolors; [R, T] or [A,S] for black and white. Even number keys [1-5] would be fine.
I understood
