There were 4 different charcoal early style door panels: tweed in 90-91, later cloth "tweed" in 91, novasuede with leather armrests in 92+ leather models, and velour in 92+ base models. In 94 they switched the seat belts to the pillar mounted ones and the door panels lost the slits. The only door panel trim options from then were novasuede with leather armrests, and velour cloth in the base models.
Cheers, JBrobst
"A life spent making mistakes is not only more honorable, but more useful than a life spent doing nothing." George Bernard Shaw