I was told, polish will get it out, if its just a fine mist layer of paint.
Get a buffer and go about it as you were to polish your car and it should take off the mist layer of paint.
I did this on my car but it had a little built up of sticky grime, which had harden and I took it of with the polish.
But best to PM Craved, he has given me awesome tips on paint as he deals with that for a living.
And go with what he thinks, I'd say.