Name of Product:
Columbus ado color (for leather)
Tokyu Hands department store
Photo of product and results: http://www.cosplay.com/photo/2849583/
A group member at Comiket used some of this stuff to recolor a pair of boots for another group member. When I needed a pair of leathery boots in brown to magically become red, I remembered and asked her to arrange a little care package.
Two of these tubes came to me via mail. Half a tube later, my shoes are done and they look great!
Awesome coverage, appears to be waterproof and resists staining well. Oddly enough, even with it's durability on shoes, it comes right off of paintbrushes and skin even after a bit of drying. A tiny tube of miracles for 315 yen!
None. This stuff is great.