I used everything in Photoshop I can think of. I've tried all those plus desaturizating and recoloring, replacing colors, contrast, brightness, filters and layers. So, I took the base texture lightened it to match the new head, and placed a partial layer of new skin at a medium resolution and opaqued it at 75%. So far it's working out well. I'm finally blending now and replacing the nipples and creating a new pubic hair later because I stupidly had merged the original. Thanks for the offer I appreciate it!