The color on the center console surround was wrong, as can be seen in this picture:

Since the car used to be a 4-cylinder coupe, it wouldn't have had the extra gauges, and would have had a different console surround. So it was obviously replaced with a non-88 surround.
I found some paint at the hardware store that was fairly close to the 88 color, and painted it.

Unfortunately, the Fiero Store doesn't seem to sell exact match paint anymore, or I would have got some.