Thanks for the tips, didn't have quick access to the ELO but will have to try it next time. (I'm sure there will be one)
The windex didn't work, I suspect it's probably due to the fact that the paint had sufficient time to cure, a detail I neglected to mention. I'm sure if it was relatively fresh, the paint would have come right off.
I ended up just scraping the paint away carefully and then buffing the plastic with a nail polishing sponge. I then dipped it in future to hopefully level out and shine up any dull spots. It's going to be far from perfect but I hope it comes out ok after it dries.