Paragraph style coloured tags

I'd like to add a coloured tag, similar to the ones in my Macs finder, to styles within the Paragraph and Character Style windows. I'm placing text sent to me constantly from a variety of programs, often rouge styles creep in, mainly self inflicted as rush and I get lazy, draging  a word file over maybe, bringing the odd style with it. Having a function that locks my styles or tags them, or even locking all the styles so new ones can't be created without asking, would really help spot anything that shouldn't be there.