How do I remove butyl from paint safely?

My Miata sits outside all winter (no place to get it inside) so I cover it up to keep it somewhat protected. Well, the new tarp somehow had a bunch of butyl on it, which I didn't notice before I wrapped the car up with it. And now there is a huge spot of it on the hood that has been kind of spread around. How do I get it off without seriously damaging the somewhat fragile paint on this car? It is a '90 with Mariner Blue, so there is no clearcoat.

In reply to NickD :

We're talking about that that crap that they use to seal tail lights and head lights right? if so, use more butyl. That's what I did when I took my taillights apart. It sticks to itself. And getting a ball of it going allowed me to get the butyl stuck to the ball instead of paint. Might take playing with the temps. Maybe heat the area of the sheet metal first, Getting the butyl on the car softer than the ball. Warm the ball in your hand (giggity). 
potentially, paint safe tape works too, as long as the butyl is soft enough (again, heat it)

In reply to _ :

Yeah, the black gooey stuff that they use. Both of those suggestions are really good. I was thinking more along the lines of chemicals, wasn't thinking the options/methods you suggested.

Most of the common solvents should do it, acetone, mineral spirits, goo be gone, etc.

I might try mineral spirits, but not much else.

I’d use a razor blade to scrape off what you can, then a grease and wax remover— something with naphtha in it. 

3M trim adhesive remover usually works pretty well for removing gunk, and it's safe for the paint.  Most any parts store should have it.

WD40.  It works on most petroleum products, tar, etc.  And it won't hurt the paint.  You then wash off the WD40 with a regular detergent/soap.

It's easy enough to test as it will start to disolve it pretty quickly.

It may or may not work here, but my first try is almost always Bestine or similar brand rubber cement thinner.  It takes a large variety of adhesive goos off, leaves very little or no residue, and it's benign on nearly all paints and most plastics.