The color of ink that will show up on your skin will all depend on its tone and shade.
Skin tones darker than tan or light olive will not usually take yellow, orange or white, and if your skin is quite dark, you may only be able to use the really bold colors of black, purples, reds, blues and greens. Tattoo inks have to show through your skin, since they are applied underneath a couple of layers of skin, and if the skin tone is dark the ink won't show up.
Your tattoo artist should be able to make some really good recommendations for you.