Kevin Murphy Color.Me 3.5 Volume 1% Cream Activator Developer 33.8 Ounce 1000 Gram Create custom-made results with the Kevin Murphy COLOR.ME CREAM.ACTIVATOR. This 3.5 Volume (1%) rich, creamy, luxurious and extremely nourishing formula can be used to make never-ending permanent and demi hair color formulas. COLOR.ME CREAM.ACTIVATOR is an exclusive formulation designed for COLOR.ME shades.