Yes, it is an older spring colour. One step stiffer than an AE black. I honestly wanted to try using AE black, but I couldn't figure out which of my side springs were AE black and which ones were the softer Yokomo ones (also black.) So I ran olive instead. I honestly think a stiffer side spring would be faster, similar to what I ran at MHIC last year, but would also be harder to drive - especially with tire wear in mod.

I believe Yugo used SpeedMerchant linear .022 side springs with AE .018 front springs. Earlier in the week he was using .018 sides, but I believe he went stiffer for the last qual and main.