I’ve taken a look at the 2011 blu-ray, Despecialized 20.1, 2.5 and 2.7, Team Blu77, Puggo Grande, SSE 1.6, and 4K77. In the Blu-ray, there is a green tint to Chewie’s nose which might have been a stylistic choice but the image is so dim that it’s not very noticeable. With the increased brightness in the 2.1 and 2.5 versions of Despecialized (which already had a strong green tint in many scenes), this green became much worse. The tint was finally reduced for for 2.7, but it only took the tint back down to something resembling the original 2011 color cast.
Here’s a comparison of all the relevant versions:
Blu-ray
2.1
2.7
Team Blu
SSE 1.6
4K77 1.0
http://www.framecompare.com/image-compare/screenshotcomparison/99B91NNU
And here’s the Puggo Grande version for fun, note the lack of a green cast for this one:
So for most of the versions of this film, there is a noticeable green tint to this shot. However, most versions don’t turn his nose bright green and look more like a stylistic choice for the grading.