Clint I know we don't have many entries yet in the database, but try looking through there. Also there are a few links in the article that have awesome photos of many varieties, some in different seasons so you can see what colors they will be in different times of the year. That is what we are working towards here in this Cubit, with the added feature of much more info on each plant. We will be adding sources for each plant also.
I do have one called Purdy's Big Red. Still not a mature specimen so not sure what to expect from it in the way of color yet. I do have some that are very red year round, just don't know the cultivar name for them, and they are one of the smaller varieties. Lost it years ago. : (
What is it you are doing?
If I wasn't already a sempervivum nut this would convince me to be one! 
