Gelee, Good question, I have the same question about how to find a cross match to these old interior colors to the newer paints. And was the steering wheels always black or could it be the Rosewood color??? Same as the dash knobs???
The only thing that I thought I might do would be to take a sample down to the local paint store and see if I could match it up with a paint chip.
I don't expect to find a close color in a rattle can. Good Luck!!!