Hi there, I Always use my yellow M-Frame lense in low light cycling conditions: Cloudy day road rides, evening rides coming home in the dusk, dark woods (well every trail ride actually). I thnk the 88% ight transmission is perfect for that. Looking for new cycling shades, i see that yellow is only offered in Radarlock. Prizm trail seems a bit too dark. Any other suggestions? I think Oakley should make a Prizm Low Light Cycling.