Beauty Camera is supposed to let you "touch up" a photo, adjust tone / brightness and stuff.
Unfortunately it doesn't work on my OG Droid. It won't load the pix, index the pix on the camera, or even load a pix from Gallery, much less take a camera pix directly. Either it just crash and restarts, or it just crashes, period. Even a recent update didn't help.
YMMV.
http://www.appbrain.com/app/beauty-camera/com.northpark.beautycamera