Right: Dark going all the way to black to best soak up infra-red radiation. And / so it is helpful to grab that infra-red from sunlight in order to dry the quilt, even on cold days, more likely lightly wet from dew than seriously from being drenched.
So: Why do UQs, following your conversations with several makers, differ so in inside color, from having (reflective (?) silver on the underside to black as black can be?
Has anyone confirmed the benefits of one vs another on the top side of the UQ as sizeable?
Note: I can understand black on the outside for reasons first presented, and for stealth.