The wheels for 1994-1996 are all the same, Solaris Silver, as noted above. The wheels for 1997-2001 are all the same, Blades Silver; they carry the same part number for every year (other than the ones for the Zanardi NSX). The center caps for 1997-1999 have one part number, and the center caps for 2000-2001 have a different part number; I believe that's because they switched from the Acura logo to the Acura name (or vice versa). But the center caps from '97-99 should fit wheels from '00-01, and vice versa, since the wheels are the same, with the same part number.
I suspect the reason your center caps didn't fit your wheels was probably because of the extra layer(s) of paint created added thickness when they were painted.