Forgot to put my hi-viz on this morning. I realised I was wearing various shades of tarmac grey from top to toe. Made me feel like I was camouflaged against the road (all I really needed to complete the look would be a dashed white stripe down my back) - especially nervy when I was on the 70 dual-carriageway. Which got me thinking...Is there a 'best' colour to wear for riding in daylight? Any studies been done?