From a design perspective it may be nice to have some connection between the strap and watch head, usually color or pattern. You will notice with the black strap US Edition Overseas and Malte, they use red threading on the strap to connect with red highlights on the dial. If it would be possible to have your strap rebuilt with grey threading, it would be killer
. OTOH, perhaps the contrast is very pleasing to you
. Playing with straps is a fun way to refresh a timepiece that doesn't cost much.