they mature late because of the synspilum in them, as im sure you know already, but some may not.
thing is, when i reviewed each fish, i was honest in saying what about each fish was good and bad.
and just because yours turned out for the better (which IMO they only went from light orange to dark orange, probably because of diet, the ingredients Beta Carotene and Astaxanthin to be exact, with some spirulina and kelp to bring out pearling...) you think it means that they will to? what if the ones you posted dont have quite that genetic code to go through that much of a change? and besides that, why take a chance on one that is more expensive AND has not colored up yet, when you can find one cheaper that colored up at 6", i mean, if it starts coloring up already, at 6" yet, just imagine that the colors could be at 8", or 10", probably a hell of a lot better then the peach one at 6" that merely turns orange at 8-10", they are called a super RED texas for a reason.
and for the record, im not saying your SRT arent nice, i do really like the second one particularly, but i dont understand why you would gamble on a not so nice colored fish when there is a greatly colored up fish sitting right there for a much cheaper price.
for some more info about the breeding, male SRT's are 99.99% infertile.
i apologize to the OP for the drama.