How do these plugs look?
 

Not the best pictures in the world, but they are yellow, not white. Is this something I should be concerned about?

http://community.webshots.com/photo/...05010340dQGnwX

http://community.webshots.com/photo/...05010293IsqPhH

its hard to tell, but it looks as though your flame is running down the ground strap almost to the base of the plug, good.
it does look very bleached, like being lean, but cant tell.
Also, cant see it, but is there any "chunky" deposits on the face of the plug, the flat circle that has the carbon it? If there is any chunks or specks, its detonation. Also, were these pulled right after a nitrous run, or did you roll a little like back to the pits, then pull the plugs? If it was pulled at the top ok, but if you waited and pulled no good to read.

No, no "chunky" deposits on the face of the plug. I drove home before pulling the plugs, so tonight I'll try to pull one and take a look at it. I also just put the wideband back into the car, so I'll know for sure what my A/F is. It's weird; I've seen white plugs from being lean before, but never yellow. Thanks for taking a look at 'em! :)

I notice a tint if green on mine, from the nitrous.

I agree with CAT3 , they look ok nothing on them to say theres a problem, Only true way to tell is to do a dyno pass with nitrous and check the plugs right after run , Airfuel at the same time on the dyno is a big plus.

Okay, that's prolly it then, because they were a greenish/yellow. I made one pass last night and logged my run with the wideband. A/F started out around 11.9 at 3200 RPM and went as fat as 10.2 by 6600 RPM. I really need to tune my A/F, but at least I know that I'm not leaning out. What do you guys shoot for A/F wise with say a 150 shot? Thanks again!

90 and 125 for me airfuel is at 12.5 to 12.9.

My A/F starts at 12.0 and goes fat to 11.0 at max RPM, rather be fat than lean on the bottle.