Matching paint??? HELP

Yep, me too. Way back in the day (late 80's) I used Martin Senour acrylic enamel on my Superbird. The paint rep was at the NAPA store one day while I was there getting paint, and he took an interest in what I was working on when he saw the FJ5 paint that was being mixed for me. While we were talking, he was the one who told me that Martin Senour was the automotive paint division of Sherwin Williams. I still have an unopened gallon of Martin Senour FK5 Dark Burnt Orange Poly he gave me for my A66 Challenger. I'm gonna put it the shaker for a while and see if it's good enough to use on floor pans.....lol. I ain't brave enough to use it on anything you can see, as old as it is!