My natural color is auburn/light brown. I have dyed my hair med brown, dark brown, mahogany, burgundy. I want to be a "lightest blonde color". What do I do? I do not like any copper or brassiness. It looks horrible on me. Is it even realistic that I can achieve the color I want? Here is my current color (all my dye has been from L'Oréal, Nice N Easy, etc.