My goal was not to make them look designer, just to up the funk factor a bit and cover up the ugly .99 price that was on the bottom of each shoe. (The 2nd pic is the hideous "Before" shot).

I just used blue acrylic paint that I got from JoAnn Fabric's for 50 cents and painted the bottom of each shoe with several coats, then used Krylon Clear Acrylic to seal the bottom of the shoes.