Easy way to dress up an old pair of boots with a stencil

I can't stop stenciling! I had this great bird stencil from Stencil1 and an old pair of motorcycle boots that were just calling for embellishment. I slipped some cardboard into the boot to flatten it a bit and used a Sharpie to draw in the bird onto the side of the boots. I'm thinking about hand painting some color into the outline of the bird shapes?