I'm going to try to save you some grief in the not too distant future. Your paint job is going to fail unless you do something to correct it soon. It is good that you can't ride the bike right now. Get the tank off the bike and dump all of the gas out of it and then let it air out. Take the cap off of it and leave it off until you get the paint fixed.
The problem you've got is that the painter did not mask the top of the fuel fill. Notice in the photos that paper was stuffed in the hole (and maybe the inside of the hole was masked) but that the top of the fill spout is painted. What is going to happen is that fuel is going to get under that paint and start lifting it starting at the top of the cap and then moving down and out. That top should have been masked off and left in bare metal. The actual paint should have begun right on the shoulder on the outboard side of the rim at the point where the cap gasket ceases to make contact. The point is that the cap gasket should only touch bare metal. You painter (or you) can repair this by sanding only the very top of the fill spout to shiney metal right out to the edge and then taking some clear epoxy (5-minute epoxy will work) on the tip of your finger and applying it over the sanded edge of the paint. If you don't do it you're only a couple of months away from a paint failure.
On Edit: I just wanted to add, this is a real easy (and cheap) fix now, but once it starts to bubble up it gets a lot harder (and much more expensive) to make sure it doesn't spread. All it takes is the fumes in the tank to get it started too, and that's why the advice to empty the tank and take the cap off as soon as possible even if you can't get around to fixing it until later.
