Monroville, I was also thinking of sliding the window a bit to the right, but I thought that might upset a few folks even more than the tinting.

The background when Luke enters the city need something done to it, that matte painting behind him seems like it's supposed to be the edge of the city or something. I dunno what needs done, but that painting needs to go.

As for the Cloud City buildings looking aged, I don't really think that is necessary, this place is kinda of a resort/Casino type place and it would make sense for things to look pretty good. A slight bit of atmospheric haze would work, but not much IMO.