Here's a fun inexpensive way to update one of those "boob" light fixtures you have.
I measured the base of the light first, then went to TJ Maxx and found a lamp shade the same size.
Once you have you have found the lamp shade you want to use, unscrew the existing light and just remove the glass base. Now add the new shade by screwing it in directly into the existing fixture, As you see in photo.
Here it is all complete, kinda different, but in a cool way!