Why are my plugs all different colours?

[Shifu]

i dont hold hate or a passion to stop people using the fuel they want, but it gets my back up when im told ,i know nothing, im a mechanic, and have personal experience of a petrol proven problem ,sorry for coming off so hard

You are a mechanic ??? Looks to me like more of a self-opnionated ignorant that has no first clue about engines nor fuels. It must be first case in the world that the 98 octane fuel killed a correctly set up motor Surely the Power Commander will fix it for you
"It definately has a problem if the richness is getting worse over time. Tuning would be a waste of time until its fixed. The tune will just go out of whack again". What a pearls of wisdom we got here!!