If you're trying to match a color, give a call to any DuPont auto paint store. They have a color match scanner that will do a great job at reading the true color (even taking into account the years of fade... Work two different times at my local store.
Due to the cost, I have switched from a local PPG supplier to the "house" brand as supplied by TCP Global. I have painted both my 1934 Fordor (Coach Maroon) and my 1930 Station Wagon (Manila Brown) with Global's acrylic urethane color. The color matches the chips and is less than half the price of PPG. The web site is www.tcpglobal.com. Gar Williams