The new formula also delivers color that is significantly more even, balanced and true to tone from root to tip offering better balance of tone and control of depth with up to 100% grey coverage. The vibrant color portfolio spans naturals, brunettes, reds and blondes, plus a special mixing range to make a wide array of shades possible. NEW KOLESTON PERFECT with ME+ features the same mixing ratio, the same development time and the same grey coverage, all enhanced with easier mixing, more precise application and an improved fragrance that offers a better experience for colorists and clients.