Why are my plugs all different colours?

[06BUSA]

you should be getting around 18-20litres per 100km if you're light cruising.
Even really flogging it high in the revs on a track day mine doesn't drop blow 14.

. . . You didn't let Corbin didn't tune it did you??

Ha good one Wardy, we did some fuel trials down in Tathra and ranged from 4.8 to 5.8 ltrs per hundred kms. This was spririted riding. On average for me Gen 1 is 4.8 ltrs. This is over 5,500km mainly hyway use. Not sure about the different color of the plugs thou? Welcome to the club anyway, Chris