If uyou are good at matching or mixing colors, Michael's craft store has some stuff for painting tile called Delta CeramDecor Enamel for glass and tile. I used it on the hidjus avocad tile which bordered the seafoam tile in my bath. It doesn't work well around the shower, but I'm gonna try marine paint for that. There's a prep solution and a topcoat that you need as well. I did it four years ago and except for the places exposed to lots of water, it worked great.