No, this should be in Game Tweaking.
And there isn't much you can do. It's how the backgrounds were done; quick and fast, with sh*tty results, as you can see. As far as I know, as it stands now, there is nothing you can do. Since the backgrounds are prerendered, there isn't much you can do, save redoing each individual background...and even then, I'm pretty sure you can't reinsert them without the game readjusting them back to that crappy resolution that they are in now to begin with (or something to that effect).
I think I might have saw that the high resolution patch may soon come with a feature that will let you filter the backgrounds, but those are just filters. Maybe when Q-Gears is done (that's said very tentatively; don't expect major results in Q-Gears for perhaps years), there will be the ability to adjust the resolution of the backgrounds, hence making them more clear.
Until at least the filters are done, there's nothing you can do, really.