My only real "warning" when breeding HM's, especially with new breeders, is to not expect 100% HM offspring. You'll be getting deltas and superdeltas in likely far higher numbers than HM's.
This is just a general thing though.
My first spawn was HM's and their care wasn't a whole lot different other than taking the time to flare the jarred males to stretch their fins.
For the color choice, Turquoise, I'd say try to get a pair from a breeder who's been working with solids. Avoid red wash and such.
I don't show, so I pic based on what's attractive.
These aren't exactly turquoise, but Martinismommy is a great breeder and her lines are show-proven. She has an auction up for 2 pairs
(2 males, 2 females).
Her fish are always lovely and if I had the $50 for them I'd buy them myself.