The watch below is an Omega Geneve which I inherited from my late grandfather, the strap was chosen by the watchmaker who serviced it, but I find that it is too thin/flat. I already have an Omega Speedy Pro and a Breitling Navitimer 806, which both are black/white on dial and hands, so I'm thinking about a brown strap for this, perhaps, to bring out the gold hands and light colored dial? Preferably something matte, but I would love to hear/see your suggestions!
I have a 6.5" wrist and will be using this as a dress watch for long sleeved shirts only.
Here is a IMO good looking brown strap on an Omega Constellation: https://forums.watchuseek.com/showthread.php?t=86214