We just got our brand new clan dragon yesterday, also frost. I immediately went to the citadel after the build tick and ran to the perch and saw a red dragon on it. He yawned, stretched, and flew off, and flew back frost.
I noticed this several times; if nobody was in our citadel, I'd go up and to the perch, just to check He'd start out red, stretch and fly off, and fly back frost.
Why k nows why. And I did file a bug on this issue.
21-May-2016 22:36:36