Pontiac Firebird 1967-2002 - What Year Did They Stop Charcoal Leather?

I have a 95 T/A and I'm looking for charcoal colored interior pieces. I know they used charcoal in 95-97 what about 98? I know they used ebony in 2002 was there a different gray between those dates?

98-99 used "dark pewter", which is basically charcoal gray. 00-02 used "ebony", which is black. This goes for Camaros and Firebirds.