Having dark hair does not mean you have to be limited in your color choices. Bold and bright creative color can be done even on those with very dark hair .For example, here are some hair color ideas for dark hair from Korean Idols who have done a great job at creative dark hair color.
For example, Shinhwa’s Junjin transformed black hair into bright yellow and Bigbang’s TOP turned his hair into pale blue. Park Bom from 2NE1, dyes her hair red. Yet another example Jessica SNSD and her long golden hair.
If you want something less wild. You can choose something modest like light brown, brown or dark purple. A warm golden shade that its similar to your natural color will add a bit of color and frame the face without looking unnatural.
You can try coloring only a portion of your hair. Use three or more colors such as combination of brown, dark brown and light brown to make a, ombre or highlight look. Black and dark purple are also a popular combination. You can also try colored wigs, extensions and weaves if you are not quite ready to permanently color you dark hair.