From Ed's web site:

Description Year MSRP Price Core Price Your Price
Graphite 99-01 $82.55 $59.44

There were other colors listed, I just happened to click on that one.
12/99 build would be an 00, maybe Ford had leftover 99 cup holders early in the build process.

EDIT- Denim blue is $59.50, parchment is $59.62- nothing came up for medium flint or prairie tan.