Have had a look at the vin plate now and below the vin is:
CW FE J J 40 31 AD BC CD DC
Im guessing it's the last 6 pairs you are referring to?
It's actually the first 6, the last 4 are for the brakes
Keep in mind that there are different springs and dampers even for standard suspension for different engine types and gearboxes and body styles.
Anyhow, that is:
Front spring red/white, 4d/5d part no. 12755248 (CW)
Front shock yellow, 4d/5d part no. 12760161 (40)
Anti-roll bar Green Sport Chassis part no. 12761909 (J)
Rear spring blue/yellow, 5d part no. 12760113 (FE)
Rear shock, purple, 5d, part no. 12765950 (31)
Anti-roll bar, white, sport chassis part no. 5239124 (J)
As it stands, your car does not have sports suspension but does have sports suspension anti-roll bars, I'm guessing that this was either to try and improve the 9-5's handling a bit while retaining the ride quality when compared to other cars available at the time or that they were just using up whatever parts were kicking about in the factory.