Tile paint

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.

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.