Most automotive paint stores (not part stores) can custom mix paint and put it in a spray can. They can also use a computer to custom match the paint colors for you. My 1985 GL1200I paint code is no longer available anywhere I could find and a local auto paint supplier (KOI auto parts in Sharonville, Ohio) scanned the color and came up with a match to a Volvo silver metallic. I bought the paint and had a body shop shoot the part. The match is great. I cannot paint myself so I chose to buy the paint in a pint can and have a shop spray my part. This supplier could have put the paint in an aerosol can just as easily. I did not see an automotive paint store in Centralia online, you might be able to get a referral from a body repair shop.
Dave / Believer45