The huge array of colours and designs means that accents on the watch can be picked out and highlighted. The right NATO can feed off the dial, the hands even the case. In short it can complement any feature of the watch that you choose it to.
The Bond franchise has held massive worldwide appeal for decades, with watches always being close to the Spy's heart. Daniel Craig's grittier renivention of 007 in "Casino Royale" has undoubtedly led to even greater popularity and has spurred even more interest in Bond's timepieces and watch strap combinations...