Easiest thing to do is to not hold your mouse like you normally would. Instead lift your index finger and point it down onto the top of your mouse button. If you then put all your focus on the lights and just flinch when it turns green, you will consistently have a better time.
@blueflame: like I said I just flinch when the light changes. Under .2 IMO is far from a jump start. I think you can get close to .150 before considering it spamming or blind luck.