Yeah, the wear and level of deposits look normal, no eveidence of tracking or arching on the the base either. But that is the actual colour, I kid you not
No real problem, plugs were just inspected to confirm the mixture was ok, the inner cylinders are possibly slightly leaner than the outers at the time the engine was last run. Other than that nothing abnormal, apart from they are pink!
I wonder what colour o2 sensors are
But seeing I'm very nosey at what fuel suppliers put in their fuel, I'd like to investigate what it is, how it affect the flame fronts and colorific values etc.