Im a hacker bro. I just tweaked the page a bit to add brushes with different colors Bv
but is little easy, although it requires knowing how the program in which wigglypaint was created works internally
First, you have to click on "Tool" located in the top bar, and then click on "Widgets" This will allow you to modify the interface. You will have to duplicate the markers and rename (You can change its name by double-clicking on its sprite) the new ones to "hi*numbers*" by placing a number between [32 - 47] except for 33, 36, 39, 32, 47, 44 those numbers are already in used (it won't work if you use other numbers, so strictly speaking, the limit is 16 color palettes, plus the number 44 is reserved for the preview when changing colors in "options")