Fixing dull spot in shower stall

[tired]

I have a fiberglass shower stall. Awhile back, I was stupid enough to use silicone to help a suction cup stick on the wall. It didn't work, and now it has been removed.

And how.

I had to sand the silicone to get it off the wall. Now, I have a circular(ish) spot on the fiberglass wall that is dull and rough. I know it will never be undetectable, but I'd like to make it look better nonetheless.

I've tried automotive rubbing compound; it didn't do squat. I'm clueless at this point.

How can I make this spot look better?

[jimbo]

Wear dark glasses so you won't notice. You sanded off the acrylic surface or clear coat, and that is not easily repaired.

[tired]

Surely there must be something I can put on that small area to make it a bit less noticeable. I know it will never be undetectable but... Something that adheres and reflects roughly the same amount of light?