Paul, I have not colored it at all. In fact it's still a little darker than the newer ones. One note though, the first one I got was clearly a better unit than the ones I've received after that. The other ones are sitting in a baggy and may never be worn (I don't like the color, knots or fitment)

When I do shampoo it I use Karasilk shampoo and conditioner.

Early on I did mix the two a couple of times but I just never saw an improvement so I haven't done it since. Just straight get2b works well for me. I put it on the whole perimeter about 1.5 inches wide.

BTW, I found with shrinkage I just do this: When it's wet a slightly stretch it over the styrofoam head (mine isn't styrofoam but I don't know what to call it, more of a fabric) and just let it dry overnight.

Oldwearer, I've never used a skin system so I have no practical input, sorry.