Or to a Sherman Williams AUTOMOTIVe store. that's where I usually go since that's what mine was painted with.
Now.. If you know the color names. and the "Scratch" is a small one you ***MIGHT*** (I'd give the odds in the single digit range) get lucky at Dupli-Color display at auto parts are us (Fictional but generic name).
I dang near fainted when I found one of mine there .