Can glyphicons be used as category images?

Sorry for bugging you guys with another question, bear with me 😛
I would like to have my categories’ images as glyphicons, but since its not possible to do that through the category edit page, I was wondering if there is a way to do it in code?

Again, I only know extremely basic things in code, and while I use web inspector to find the various IDs of things I wanna change, I could not find anything that could help me with this issue.

Thanks in advance, appreciate all your help!