W123 Interior experts? Color questions for those in the know.

[79300D]

I have a 1978 W123 with that odd Yellow / Brown "Bamboo" color interior. I cannot find floor OEM floor mats in this color anywhere for this model / year. Did this car originally come with these color mats, or, were they a different contrasting color ( like black ? ) Anyone with any ideas? Performance Products sells a non-oem mat set in this color, but I'd really like to stay as original as possible.

Thanks for your help.

Jeffrey