Darker exterior color cause higher temps inside?

Technically and from a physics perspective I am sure it makes a difference. But if you buy a decent RV with enough AC's and power as well as decent insulation, I doubt it matters much. I don't see many complaints about darker coaches with 2 or more AC's keeping cool. I am sure if you took the time to measure KW/hour vs a lighter coach you would show an higher KW usage. But let's face it, RV's, especially motorhomes, are a great example of inefficiency to start with. So, it's kind of a moot point.