I've just recently bought a few straps for my Metri. I don't know, I guess I got tired of the all-silver look. Straps I got are mostly in brown leather, latest being a distressed looking strap (all from local brand Asprey). The last two are older pics. Other than that, I got a rubber strap from Bonetto Centurini via Amazon, which is also pretty cool - smells like oreo cookies. Here are some pics:
Thanks for looking!