Subjective warning.
Only transparent protective polish is ok, all colors looks disguising.
Especially with some images or pattern on them. But even solid color is weird, the spacing between them… How with hand movements I see 5 sticking out moving bright dots in the air… Toes even worse, with one big color spot moving differently than other 4.
Japan used to have 歯黒 (haguro) tooth blackening and those pictures can be a bit strange to me, but I don’t necessarily hate it. I can’t imagine multiply-coloured teeth, however. For some reason my brain wants to think that is like mold or something. Painted nails don’t bother me at all.