One of our recent walls in a similar grey. When I visit you'll have the Chromix Silver board itself to look over.
The look
Grey with a bit of grain
Chromix Silver lands between wood and stone. It's a silvered grey with a fine weathered grain running through it, so it carries more character than a flat grey but stays calmer than a bold marble. That balance is why it gets picked so often.
It's an easy one to live with. Fingerprints and dust don't show on it, it takes every LED colour well, and it sits happily between cool greys and warm timbers, so it works in a room that mixes the two.
Black Oak thin slat gives you a smart contrast. Sinner Oak or Grey Oak wide slat keep it tonal, and Walnut warms it up.