PU Masterkit bushings Energy Suspension Hyper-Flex System Honda Prelude

HYPER-FLEX SYSTEM Complete Master Bushing Set Includes:
bushings front and rear control arm
front strut bushings
front and rear coil spring insulators
bumpers front and rear
shock absorber bushings front and rear
Energy Suspension makes parts in 2 colors. Red and black.
How do these two colors differ?

The only difference between the red and black parts is that most Black Energy Suspension parts are graphite impregnated.
This will help lubricate the bushings themselves.
The red parts do not have this feature.
Apart from the actual color and the lack of impregnated graphite - the red parts are essentially the same as the black ones.