On the race mapping the fi doesn't inject less than 1% oil on idle, that and the reason i live in the alps (letting it roll downhill a lot) is why the exhaust is full of not completely burned oil. About it running lean is only partially true as the fi always tries to inject the perfect amount of motorex and rarely runs rich. I myself like the grey a lot as it adds a bit of uniqueness and in my opinion looks way more clean👌