Choose the figure you wanna coloring. Click or click and drag the mouse in the palette to choose the color you want. See in the rectangle below what is your current color. Click in the region you wanna draw and repeat until you are done.
I tried to create the possibility of choosing all the colors instead of a limited number of them. You could create easily more figures, just cut the figure in sections, coloring them in pink and add the border (well, and add de code too, of course ;). Use it freely and enjoy.