towne32 said:
I think it's the big grey line to the left of his cheek. It would probably be easier to see compared to a frame before or after. It looks like a color from the background xwing. So presumably they were using a color extracted with an eye-dropper type tool and left a paint stroke.
Yes, that's it exactly. In hindsight I should have also posted the frame before as you say so it was more obvious what I was talking about.