It's not just the bright red and blue ones that are stunning. Our Cuitzeos are stunning snakes with pretty much an all black paint job, the checkereds have some subtle pretty colours, and western blacknecks take the checkereds style to another level.
Having said that, other than a third Blackneck, next year the top candidate to add to our expanding bunch of garters is an infernalis (yes, I know).

I've also heard that there's something called a "radix" which come in many different colours. I really must add one of those to our brood.