Unfortunately I didn't take "before" pics, but this light fixture in the upstairs hall was a rectangular (but coming to a soft point at the bottom) frosted globe with flowers on it and couldn't stay. Here's the cheap, easy fix I came up with (it's been in place for about 3 yrs with no worries).
I applied double-sided adhesive (I found it in a sheet at Michael's) - cut to size - around the globe. Then I put on some decorative rice paper, cut a little bigger than the globe over the adhesive. I had to put some more adhesive on the seams, which I left sticking out a bit -- especially on the bottom. To further dress it up, I poked through some glass beads wrapped in copper wire.
It has a energy-saver compact bulb with a low wattage and just gives off a soft blue glow -- mainly used as a night light for the kids, so no problem. Lighter color rice paper would probably do the trick if you needed more light.