I once read that an essential part of modelling is to remember that sometimes it’s better to simulate rather than replicate. To that end I’ve tried an idea to simulate black anodising on the shoulder strap anchors. Have a look on the Cockpit page.
EDIT – A correspondent has pointed out that the FIA mandated steel mountings for the seat straps, so these would probably have been painted a satin black. Thanks Duncan! (It was a good idea though…)