Its a ugly yellow and i want it white. If i sand it good can it work?
Hi Brenda, here's a tutorial of a blogger painting her ceramic floors. I don't see why the same method wouldn't work just as well on the walls too, good luck! https://www.drivenbydecor.com/how-painting-bathrooms-ceramic-tile-floors-diy/
This video is for an entire tile wall but the same basic idea would apply to a ceramic tile border in the bathroom also.
Tips on painting tile from other Hometalkers. Same concept. Choose your weapon.
I painted the ceramic tile backsplash in my kitchen with regular latex white paint and then did three top coats of poly. It's been 2 1/2 years now and it's still in great shape.
I would clean, dull the finish. Wipe it down well, and prime and then paint it. A poly sealer would keep out moisture.