Re: 1948 firestone colour
They were aluminum silver almost through the 40's, went to the green-bean/pea green in 49 or 50. Don't know of any close matches to the green...I've just color matched as best I can. Custom colors get pricey...but a good auto body/paint shop can match the color exactly if you have a sample they can scan...some can also mix and put it in a can for you.