the miami girl is one of my favorite snakes. Her background color is more silvery than the pic shows (for some reason, I have had some trouble getting the greys to come out in my pics of miami phase corns.) The aberrant miami phase boy is way more grey (background) than the pic shows too.
As for temperament of the hybrids, I'd say they are a nice combination. The sin/corn cross is shy but easily handled, she has never musked or tried to bite. The cornduran I have (not shown here) is also a nice snake. Of the jungle corns I have, 2 are a delight and 2 are flighty, and 1 is just plain nasty (she has been that way ever since I got her.) I have some milk/king hybrids and they vary a lot in personality too. Some are easy to handle and quite tame, others are flighty or like to musk.