BTMC / SEL Assistent, was that the first of the standard greys?

[unbeldi]

Thanks Unbeldi, indeed the question has changed from who introduced standard grey to where did it come from.

It seems to me, although the 282 came in a hand full of colors, grey is the most abundant by far. And perhaps that is it, customers chose grey.

Anyway, I'll contact Dietrich about it. Perhaps he can shed more light on it.

I would love to get a copy of that 1957 Siemens paper, that was his source.

I've had contact with Dietrich about this matter and the source was a 1957 Siemens catalogue, stating the available colours and versions.

Thanks for the update.  I am sure many would benefit from a scan of that catalog.