Spark Plugs are Ghost White - AFR's are good
 

Spark plugs are super white, AFR's are good, N/A 1.6 car.
Running 15.3-15.4 in cruise and 12.7-12.8 at WOT. Motor seems to pull strong.
Plug is a BKR6E-11 V-Power, Thoughts?

https://cimg5.ibsrv.net/gimg/www.mia...c6b6afd5e0.png

I have about as much faith in reading plugs as I do reading palms. If you trust your AFR reading then I wouldn't worry about it.

Plug looks good, maybe a tiny bit lean. You can only read what the engine's doing right when you shut the engine off. So if you were idling, that's your idle plug. If you do a WOT pull and shut it off, pull over, and check the plugs, they'll probably look a lot different. Give it a try.

To me, that looks like a ~14.7+ idle.

Unleaded gasoline runs very clean and E10 is cleaner. They will develop a little color over a longer period. If your timing is optimized you might see a few specs on the center ceramic but white to a very light tan is ok. You also want to look deeper into the shell not just at the projected part.

Cruising through my neighbourhood, so I'm guessing a mixture of the 15+:1 area and some 13.5-14 action, probably should have taken a log but whatever, Ill maybe richen cruise from 15.4 to 15.2 and WOT from 12.7-12.6 for peace of mind, and do some testing.