Yes! It is possible to paint over ceramic tile, and in some situations
this is a good option. It is very important, however, to make sure you
follow the correct procedure. First, the glossy surface of the tile must
be scraped to create a substrate that paint can stick to.
Also, any
dirty spots must be cleaned, and damage must be repaired. Next, several
coats of tile paint need to be applied, followed by a clear urethane
coating. Usually the tile paint will be oil-based, producing a good hard
finish.