Kolkpen said: It's still easy to see the, especially if they're in sand or snow (in this case dirt)
What's goin' on with her left hand?
The cold-blooded thing was a joke. You know, with Cirno being an ice fairy and all -_-
Also, Ran's hand is like that because she's supposed to be throwing something at Cirno. In this case it's blood, which as Nineball mentioned, can't be thrown.