Are you dying your hair yourself or getting it done professionally?
It's a lot easier to do just one color yourself, especially when you're getting into unnatural colors. If you're getting it done professionally though I think it would look cool to do pink with black highlights. Either way I'm sure it will look awesome.
it depends on what color your hair is. If you have blonde hair and blue eyes then pink hair would look amazing!! black and pink would look good for green eyes and a lighter color brown. If you have dark brown hair you prob shouldn't go for pink cuz then you have to bleach your hair and bleaching ruins ur hair :/ so go for a darker color if your hair is already dark