OP, why would you want tan seats in an E86M?
I have Pearl Grey in my non-M E86, but beige was an option - never tan though (at least in the UK).
Not a great photo, but this is Z4Forum so one is required!-
I couldn't read your threads due to my linguistic inabilities, but loved your thread on your Fiat 125S - back in 1977 I had an Olive Green Fiat 125 as my second car! That Lampredi engine was fantastic!