It's just standard processing. I mean, this is a scan, and there's always some element of colour correction in those done automatically by the scanner (sorry apug purists). Pretty close to the original transparency though; there was some reddish light as the sun was setting here.
Actually during this exposure the sun was popping in and out of clouds so it's a half overcast / half setting-sun kind of exposure which probably kept the contrast in check or something.