For comparison, I guess the similar shot on this page was taken at the same time and using the same tripod holes, and the colours are very significantly different on my screen:
http://www.tnphotography.net/places/scotland
Well, I guess what's "very significantly different" is rather subjective, as I do not see it as such. What I see, in the example you linked, is a slightly overexposed, cooler white balance with an unskilled overuse of Clarity.
In other words, use a warmer white balance, reduce slightly exposure, reduce Clarity and you'd end up with pretty much Kevin's version.
Besides, it is not about
what was in front of Kevin's eyes, as measured by Benjamin Moore bathroom painting color strips. It is about
how Kevin saw it. You (rhetorical "you") may or may not like it, it is your prerogative, just as it is Kevin's prerogative to present it the way he saw it.