Alrdy,
I use the silver stuff, but I have no idea what the difference in color says about quality/property.
To answer your PM, yes - I use Theraband only, so the issue of inner and outer wrap is not one I ever have to deal with. This is mainly due to laziness, but it also eliminates the chance of complicating things with two wraps, for me.
What Stevie said about ‘what works for one may not for you’ is especially relevant when it comes to wrapping, IMO. For all the guys hanging here we are all essentially using the same few devices yet the variations in wrapping materials and technique is extremely varied.
I think that speaks to just how personal a matter like wrap is.
-Cap