You're right on many points:
James Bond's strap was more around 18 ( I think 18 mm ) than 20 mm, for sure.
About the colors, yours is indentical than the one he sported.
I have a pic in the bloody hell other mongrel computer which doesn't want to work...
As for SMQ, his watch was certainly NOT a 1655, that is an urban legend.
He sported, in reality, a 5512, which was, if I remember well, recently auctionned.
Best, my friend.
Nicolas.