Custom Plastic Cups Paint To Use For Custom Pimp Cup?

Paint to use for custom pimp cup? - custom plastic cups

I am a custom pimp cup for my girlfriend. I want to paint the black outside, but I do not know what kind of paint to use?

Plastic cup did not like (a glass that can break the)
The color is not toxic, and probably also in the dishwasher (although I think that washing your hands, that the best way to go if it were cleaning between drinks)
"I do not want a painting to be hardened in a furnace, because the plastic will probably not be kept in the oven.

Thanks