Part #77102-S84-A10ZB = PAD *NH284L* (LIGHT QUARTZ GRAY)

Part #77102-S84-A00ZB = PAD *NH284L* (LIGHT QUARTZ GRAY)

Are you sure those part numbers are what you want?

According to these part #'s, they belong to passenger side dash cover (part #017):
http://www.hondaautomotiveparts.com/...STRUMENT+PANEL

If you're looking for part #6 then i'm almost sure they're interchangeable.

Based on a 99 Accord 2DR EX VS 99 Accord 2DR EXV6:

They both use the same part #6 as follows:

Both use Part #6 (YR169L) = MILD BEIGE
Both use Part #6 (NH264L) = CLASSY GRAY

But on the 2DR EX Part #6 (NH284L) = LIGHT QUARTZ GRAY
&
2DR EX Part #6 (NH283L) = QUARTZ GRAY