The only reason I know of what I speak is because of the shit with our store.
Being an off shade doesn't matter, it is the use of the color with the terms.
I'll give an example, we had TigersX stuff on the shop, had nothing to do with Auburn University. However the fact that this is clearly a dedicated Auburn site, and we were selling the merchandise that was orange and blue, with the term tigers on it, they could shut us down.