I have a 89 LX stock 302 block with some bolt ons. I am running autolite 24 plugs and 100 shot of nitrous. My timing is at 12 initial and 24 overall. I went up the street sprayed it in 3rd gear for about 1-2 seconds and shut the car off and coasted back in the lot here to look at my plugs. I pulled 3 differn't ones and they are all the same color. They are a dark rust looking color. What does that mean.