Kevin Murphy Color. Me 10 Volume 3% Cream Activator Developer 33.8 Ounce 1000 Gram Create custom-made results with the Kevin Murphy COLOR. ME CREAM. ACTIVATOR. This 10 Volume (3%) 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.