Exotic nutrition have a new, two-tone green coloured version of the standard 12" silent runner - which apparently glows in the dark! Although what use that is to a hammy I have no idea - they seem to manage perfectly well without a glow in the dark wheel!
Called the Silent Runner glow wheel - if anyone fancies an alternative to Orange!
https://www.exoticnutrition.com/Prod...l__EN3183.aspx