There were definitely gold/bronze ones. They tended to be on the top models & were on 45S's in the mk1 and 1000S's in the mk2 usually - probably due to the additional cost.
Of course the best was the mk1 VIP with 2 tone metallic brown and metallic gold.
I thought the same, the best we've done was 61MPG and that was in a Selecta not going above 50mph from Liverpool to Norwich. Not sure a manual would get that high, and certainly not 70mpg.
I've just driven down to London for a couple of days and I'm about 3 miles from Kennington. I called today at about 2 to ask if I could view it sometime over next few days. No reply yet
Sorry for late response! Just got back to Devon. I had no luck getting hold of the seller left messages but no reply and the email link in the add doesn't work for me. I'm going back next week so I'll keep persevering as I'd love it but won't begrudge anyone on here if they manage to contact the seller and get it first