How are guys matching factory paint ?

I understand guys, thank you. But, it doesn’t do me any good if there’s nothing on the car that I can take to them to scan. That’s the dilemma.
Well then, use the original paint code and recipe...they will mix it to spec. If you aren’t matching anything, then take it all back to factory mix spec. and blend when you spray.

Otherwise, take a part or the entire car to be scanned or ask them to come to you and scan.