I'd be interested in knowing what is meant by Kaiser "Son." It's not a model I've heard of. Do you have pictures? If so, e-mail them to me and I'll post them. Otherwise, look at the data tag on the firewall and see what the model designation is. A 1950 Kaiser should be either a model K501 or K502.
It could be a "Horizon Blue" with a broken script. Or possibly "Onyx?" Let us know and we'll do what we can to help.