Somebody with more experience than me should answer.
Presumably most limited production carbon fibre epoxy structures are
cured at room temperatue, if exposed to sunlight the internal
temperature can exceed 80-100 degrees c hence degredation of the
properties, this is why modern carbon fibre gliders are white.Commercial
structures eg Boeing 787 are trated in an autoclave at elevated
temperatures.
Carbon fibre in contact with aluminium needs an insulating layer to
prevent electrolytic corrosion.

Peter Whitehead