I am only referring to what your calling "tone" or how hair shines lighter in color when light hits it, in my case from black to brown. Am I really at complete mercy of the factory for getting this natural and beautiful feature? How often do they not get it right? You see, I have no experience with hair products of any kind and don't know what to expect from a hair piece at all. The gallery of pictures looks somewhat promising, but I thought I ought to make sure the factory is aware of this characteristic that is visible in natural hair.