Raven, that IS the retail disk - I checked, and mine came with the coupons and the iWork '05 (trial disk) etc. Sorry 'bout the link - not sure what went wrong there, but the install disks that are machine specific are definitely gray, not black.
So the mystery is: why doesn't this work? It's possible that you simply have a bad install disk. I'll have to look up various other possibilities tomorrow.