Considering I have only brought this plant out on the handful of days that it has been properly sunny, I must say I am really pleased with how much colour it is gaining. If you compare this photo from the last post on Aeonium with how it looks now it has become much much darker. I wouldn't be surprised if it really starts to approach black when it gets to spend its days outside.
I also took some pictures of the Aeonium at Kew.
Look at how black their Zwartkop is, and those green forms are not bad at all (I will have to restrain myself)