Out with the old and in with the new! All over streaks and highlights are so yesterday! Now the monochromatic look is back in style and sexier than ever. Blondes Amp up your dos by brightening your base and blending in any existing highlights. For extra shine, do a monthly gloss treatment. Brunettes Go for two tones darker than your roots. A deep chocolate or a coffee shade will make your do super shiny and ultra sultry. Redheads Avoid copper hues which can make for pale complexions. Instead, opt for shades of auburn or amber. ...