In our small master bath, we had dark curtains.  In an effort to brighten, I changed out the shower curtain with solid white and put these curtains on the window. I put a sheer behind the curtains, then hung a pair of panels on the bottom and a balance on top. Worked wonders. I feel great each time I open the door. Subtle colors of blue and green on white give a pretty brightness to the room. Wish I did this a while ago.