I’d use the metal thing on the cap as grey/white reference, not the uniform.
The revisited version seems OK to me.
The link posted by Adiwan ( https://en.wikipedia.org/wiki/Feldgrau ) also shows a range of colors corresponding to Feldgrau. Modern variants and photos point towards a slight green tint, but it can also look grey, olive, brown, etc.
Depends on illumination and actual tissue I guess, but I agree that a very slight green hue would be OK.