Very nice job. Looks really good! Any chance you'd consider setting the background colors of the Thumb View to match those from the track area? Right now, it seems to be a fairly dark gray. Given there are 2 colors making up the backdrop of the track area (a lighter and darker representing bar offsets), that would probably fit in very nicely with the Thumb View since the "in scope" area is lighter and the "not in scope" area is darker.
Very nice job. Looks really good! Any chance you'd consider setting the background colors of the Thumb View to match those from the track area? Right now, it seems to be a fairly dark gray. Given there are 2 colors making up the backdrop of the track area (a lighter and darker representing bar offsets), that would probably fit in very nicely with the Thumb View since the "in scope" area is lighter and the "not in scope" area is darker.