I know snakes are solitary. But since Vinny was housed with another snake since he was very young and has always been since and the other two were housed together AND with two different breeds of snake I highly doubt thre will be a problem. They're doing amazing together now and seem quite content. they have a 40 gallon tank, so can roam as they please, but the choose to stay together.
some species of snake come together and hibernate in large clusters and breed that was sometimes too.

And as for me thinking that Vinny could be a het of somesort...it is just that...a thought. I know that colors can vary, but I just found it interesting that he shared some similar traits to my gold python more so then my other male pastel and some other pastel pythons that I've seen.