How to Paint Tile - Give outdated ceramic tile walls in your bathroom a new look by decoratively painting them in colors you love. Enamel crafts paint (available at crafts stores and discount stores that carry crafts supplies) covers well on most tiles.
How to Paint Ceramic Tile - DIY Painting Bathroom Tile - Redbook I have another pin that talks about this; going to compare techniques and see what works best. REALLY want to do this in my upstairs bathroom.
Floor Painting: A Guide to the Whats and Hows of Painting Your Floor
You can actually paint any ugly tile floors you’re not crazy about. Start with primer (after thoroughly washing floors) and finish with a couple coats of poly-acrylic. 36 Genius Ways To Hide The Eyesores In Your Home