I wouldn't say for sure that you're wrong, but I don't think it's a major concern. I do have a pair of solars, and I can't say the male color has improved. I have over 30 wrasses and the 2 solar are never together... The female is always swimming around with my orangeback. (They look more alike than the 2 Solars)
IMO blue coloring on fairy wrasses seems to fade more than other colors