Tile paint

Yes, it works fine if you prep the tiles properly. Clean them well, lightly sand to dull the surface, then use a good tile primer so the paint has something to grip to. After that, use a specialist tile paint and take your time with thin coats. It holds up well in small kitchen areas as long as you avoid scrubbing it with anything harsh.

I’ve used it in the past. I found the best way was to use a small sponge roller and paint each tile individually. Afterwards you can use a contrast to highlight the grout. I just left mine white.