The Recon Fog is the transition gray silicone ring you have been looking for. In low light it crosses the visible boundaries into black. During the day, there is no mistaking that it is a deep cloud cover ready to absorb whatever life throws at it.
Every recon ring is made from medical grade silicone making it a lightweight, non-distracting alternative to a metal wedding band. They are designed for active lifestyles and truly kinetic individuals.