If you wondered what it would be like to have a different hair color, but perhaps you should check this scene hair pictures gallery:
Either go to a hairstylist or use a razor to cut your hair. Make layers at the crown. Shift the volume of hair towards the side of the face which you wish to cover. You would need a straightener if your mane is curly. In the end apply tints of pink, blue or blonde to certain selected streaks.