OK; I have seen the cold soaked fuel tank effect. Once, following a steep descent from about -15C to about +25C, into Trieste, after landing I saw ice build up on the tanks and then fall off
Quite amusing.
But
during flight the airframe should not be at a different temp for more than a few seconds. Especially the thin sheet metal types of GA hulls/wings.
Windscreens seem to be a different issue. I have had ice form on the
inside of the windows when I was flying with some heavy-breathing people
But this is very rare. Windows can mist up anyway...
Yes it does look better for Saturday. -6C ground temp in the morning