[Let's try something else.]

You said ordinarily you would be called 'warmblood', correct?

If you were cold, would you still be a warmblood? You're cold now, aren't you?

A quirk can be two things; it can be the word you're thinking of, like 'warm blood' is to me, or it can refer to anyone bearing an 'abnormal trait that in some way grants a particular ability'.