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I'd be surprised if they kept it. Remember that they were having lots of trouble producing any cars at all then, so slipping one car would have made a noticable difference to the quite unhappy customers at the time. Maybe they'll be able to buy it back somtime, though.
The dash looks lighter in #43, but appears to be standard black in "TESLA 1" - i.e., they may not be the same car unless somebody paid to swap out the dash in between the photos.
I've seen the Signature Green in person, and it sure does look black indoors until you pay close attention.
As for lighting, I compared the steering wheel color to the dash color in each. The photo with a lighter dash looks darker outside, but the steering wheel looks the same color in each. I suppose it's not terribly important, but I still think the dash is different. At any rate, I'm certain there's more than one Signature Green with those same seats.