Go to the autoparts store and buy this stuff called buffing compound. It will be in he section where they sell the car wax. Use it and it will get rid of that film.
Here it is on Amazon:
Meguiar's G18116 Clear Coat Safe Polishing Compound - 16 oz. https://www.amazon.com/dp/B006FUT154/ref=cm_sw_r_cp_api_ze3hzbJHNS5B3
Something like this sort of thing: MEGUIAR'S G18116 Clear Coat Safe Polishing Compound 16 oz. https://smile.amazon.com/dp/B006FUT154/ref=cm_sw_r_cp_api_fabc_1bEVFb1J221KK
You definitely don’t need a paint pen - you’re looking to remove transferred paint gently, not add paint. You’ll just need a foam applicator pad, some elbow grease, and a microfiber to wipe off the residue.
There’s no rush on this - once COVID is more under control, I’d just swing by a detailing shop, throw $20 their way and they’ll buff it out in moments.
LOL i had the same issue. Turns out that the back camera has a coating, which makes pictures all blurry. Get some polish and with a qtip clean the camera glass. Sadly i figured this out too late, i though the coating was more of a peel so i tried taking it out, turns out i was pulling the glass.
something like this
MEGUIAR'S G18116 Clear Coat Safe Polishing Compound 16 oz. https://smile.amazon.com/dp/B006FUT154/ref=cm_sw_r_cp_api_glt_fabc_BFYYQ6CNJQCE68QN32TR?_encoding=UTF8&psc=1