FFS this is getting ridiculous. It's just video compression artefacts.
Look how badly compressed the background of that video is. And you guys are going through this with a fine tooth comb like they're the fucking moon landing pictures?? The green bit between his suit and his arm is either colour bleed from low chroma subsampling, or an artefact produced by deblocking filters applied to the sub-blocks along the suit and arm interacting with each other (and probably some combination of the two things). Why would the colour need to "match other colours on the screen"? What would that prove?
Seriously, this is just a low quality video of an old man getting on a helicopter, and we have multiple angles and witnesses. This is the most retarded conspiracy ever. What, you think he didn't actually get on the helicopter? Why?