I have pink ceramic tile on the shower walls and floor in my bathroom. Is it possible to do a quality job that lasts?
The best finish for your tiles is the baked on glaze that tile has, but it is possible to paint the tiles with an epoxy paint and have a virtually maintenance free finish.
A good reference for this project is an article submitted by Simon Phillips called <a href="http://www.house-painting-info.com/article-simon_phillips-painting_bathroom_tiles.html">Painting Bathroom Tiles</a>. The main points to pay attention too are the prep and your choice of epoxy to use. Personally, I would use the best epoxy paint you can afford for this project.
Give the article a good read and let me know if you have any questions.