Fading is the process of some fish where they lose their juvenile ( drap/ camoflauged color) and transition into their adult colors.
For example, the majority of amphilophus fade from gray/ striped to orange, yellow, or something slightly darker..... being that red Texas pretty much all start out with one parent being an amph, the likelihood that they will fade the base color ( in our case, a faint orange/ gray color) to a bright red or orange red base color with the blueish spangles on top.
In fact, I have a pure red devil growout ( about 3”) in with my srt and he is starting to fade( they get a dark/ gray black color all over before it fading / peeling into a nice bright color