The aircraft is a composite Lancair 360.

Looks like you should stick to the light colors, white, yellow, silver etc, and
keep the dark trim colors to a minimum.

I once took one of those infrared heat guns with me to the auto auction (1000+
vehicles) on a wind free day. While there can be some error with the IR units
I did come up with some real surprises - like silvers that get WAY hotter than
you would expect and some rather dark colors that weren't that bad. I suspect
there is more to how hot the paint gets than just the color, like the kind of
flake, pearl, or even the clear coat.

White is boreing, but it's the only fool-proof color I know to paint a
composite plane.