There is more to it than just the color. It is the actual material that is different, premium twill vs. standard black diamond. I am sitting in the same predicament, I have pretty much settled on the trektop nx as I currently have a hardtop only. I'd like to say that money doesn't matter but it does. I know that if I were buying a new jeep I would pay the extra $400 for the premium twill soft top. Its a harder pill to swallow on a used Jeep. Is there anybody out there with the twill trektop nx to chime in...please????