You mixed 2002 with 2001 and 2000 was technically a red/grey, not silver. Only 1999 and 2001 saw unique third schemes, 2000 and 2002 third schemes were just leftovers from the previous year (2000 saw the black/grey of 1999 and 2002 now sees the blue/silver of 2001).
A total of 10 factory schemes exist:
1999 Black/Charcoal
1999 Red/Black
1999 Copper/Silver
2000 Red/Grey
2000 Silver/Blue
2001 Black/Silver
2001 Blue/Silver
2001 Red/Silver
2002 Black/Blue
2002 Silver/Silver