Help!

First mistake is that it's underexposed, but by looking at the sky, the day was pretty dull as well, so your light was flat to start with. Also, consumer films like Superia are not necessarily the best options if you're looking for accurate and/or pleasing colour reproduction. He would be much better with the pro line films, which have a much better gamut.

He should send the XE-7 to me for disposal.
Did you find any Chlorophora Tinctoria in Guyana?
Mark

I haven't shot color film in a while, but I agree with Michel.

"First mistake is that it's underexposed, but by looking at the sky, the day was pretty dull as well, so your light was flat to start with"

I would cut the ISO in half. That will get rid of the green in the shadows. This could be tweaked in Photoshop. I made curve adjustments and I destaurate the greens in HSB.