1/10th Buggy, Shock Piston Quiery

[DerbyDan]

Can I please ask what the order is in terms of damping between the different coloured Losi pistons for the regular 1/10th off road buggy shocks - I brought my CR2 second hand, it has black pistons in the rear & reds in the front (reds used to be the standard for the old Losi XX & early XXX If I remember correctly) but i'm unsure how they relate to each other.

Thanks in advance

Dan