I work in the boat business and play in fiberglass all the time so I have a lot of experience with this stuff. as long as your sure it's paint and not gelcot this will work. if it's gelcot brake fluid will not effect it.
I just submerge parts in brake fluid wait a few hours and rub the paint off with a tooth brush and wash it with dish soap and warm water, dry it, apply new paint.


Miloh.