We have some pretty big lighting issues in the homeschool room. One side of the room is bathed in harsh sunlight, and the other side is dark. Really dark. So I softened the light on the door side with out taking a lot from the rest of the room with these thrifted curtains (that just so happen to be the same color as the wall!) mounted on sticks over the sliding glass door.
All in all, the new changes are working out well. And look really beautiful too!