I'm not a total fan of CTs ... though I have two little boogers. I find that my water parameters are too hard for their fins and they'll melt if I'm not careful with water changes. However, it seems that my use of black water extract in the tank water is keeping their rays straight enough.
I also USED to not like doubletails or rosetails, just because of their overall genetic deformities and whatever. But I've had a few here and there over the years and they've both totally grown on me. If I ever see a doubletail, there is no way i'll pass them up.
As for colours ... steel blue, wild colour. Common, a little boring .... just sort of .... meh ....