2007 switchback 600 H.O CFI primary spring?

[Polaris boy]

2007 polaris switchback 600 H.O CFI 144" 1 1/2" track

Hey guys, on my sled i still have the factory black/green primary clutch spring in it. I was just wondering whats a good color to go with. I like back country riding..

 

[Polaris boy]

i want more snap off the line..