John, which ones have you tried so far? I used the NPD spray paint for interior FGFs (plastic/vinyl/sheetmetal), matched my Ivy Gold perfectly. If they can match my color they must be able to get close to your parchment.

Then again, I'd think that parchment is so light it would age and darken much quicker than a more solid base color. Could be hard to match based on exposure, eh?