IMHO no. Not with veileds. If you were going to breed than yeah maybe. You're not guaranteed to get a veiled who's yellow of you go with that "bloodline" either. The only reason bloodlines matter with panthers is to keep what is known as a "pure locale" keeping Ambilobes breeding with Ambilobes and Ambanjas breeding with Ambanjas. Panthers matter more on the breeder you chose than the bloodline you did. IMO the chameleon market is saturated with panthers of all bloodlines.