I'd have to disagree there, the first few generations removed from wild parents usually tend to show better color and markings, as people intentionally and unintentionally pick the best color in their breeding stock. As the generations progress, and inbreeding becomes an issue, then you would see deteroriation of the blood lines, but definitely not immediately. Any lack of color or other issues you have with F1 fry are most likely environmentally influenced.
With that said, my F1 Queen Arabesque fry are only 1.25" and already show great patterning and good color.
I don't personally understand the idea that it would be beneficial to continue collecting these fish, and putting their numbers at risk in their native waterways, rather than supporting our hobby with responsibly bred fish from hobbyists. That's just my opinion though.
Barbie