I got the following reply to my query from Phil Hawkesley - I am beginning to accept that it should be a black frame and Marrakesh Red... Just wish I could find that paint code!
Brian
HI Brian,
I’m afraid I can’t be much help – have no details on the Orlando Orange other than that they were made. The BMW Parts CD doesn’t list them and I’ve never seen one – I’d guess they would have been US market only.
A GS of that age would have had a black frame regardless and could have been produced in Scheme Code 640 Avus Black, 641 Marrakesh Red or 642 Alpine white. The 640 is what is known as the ‘Bumble Bee’ – black with bright yellow stickers of varying designs and the front half of the seat would have been bright yellow – if yours is orangish, it’s likely either faded or someone’s had a go at re-colouring it.
Best I can do, hope it’s some help,
Phil