Did pretty much the same as the OP but replaced Batman with Harley Quinn. If I find a pair of green shoes, Poison Ivy will follow :D
Easy colourful shoes for art lovers
A nice sumer project to re-vamp those flats!
Make your own pair of shoes
Eat your heart out Lisa Frank!
Pow! Kaboom! Blam!
Liven up your old kicks with some acrylic paint!