There are several pictures of dark brown hair with highlights giving an idea as to what all colors can go along very well if the natural hair color is dark brown. Hair highlights also depends on the length of the hair. If the hair is long and little wavy, then the front and a few patched of strands on the back can be streaked with a lighter shades like golden brown or bleached.
Other colors like white, shades of blue, pink, purple, copper etc. can also be used. All these shades can be used as a mix with separated strands being colored with a different color.
