And with a lot of work, it might have been made a little more opaque.
Yes and no. They're standard knitted wool 'fingerless' inserts; the big problem is the colour, as you said. The linked source only has them in black and olive drab. The ones from the pilot are 'rag wool' (natural colour tones), more like these:
A pair of rag wool fingerless gloves or these:
Another pair of rag wool fingerless glovesThe first of those links is a military outfitter, which I'd count as the better source.
You can see in the promo shot that Mac also has a pair of black gloves clipped to the zipper pull on his left front pocket. The fingerless gloves are inserts -- they're meant to be wearable inside the second pair of full gloves. The inserts are for warmth, the black gloves are waterproof as well as providing full coverage.