Yellow jerseys and everything else
Color Blindess and Cycling Visibility:
My preliminary conclusion is that yellow and royal blue work well, whereas red and some shades of bright green don’t work well at all. Royal blue has the additional advantage that it would also stand out against fall leaf colors; yellow would not. However, yellow is generally considered a more highly visible color, and one color-blind cyclist wrote to tell me that bright yellows work better for him than bright blues. Perhaps a contrasting combination of yellow and blue is best, but it would seem that one could be much more confident of yellow than of blue.
I have a yellow rain cape and a yellow helmet cover, so I guess I’m covered in the rain. Most of my other stuff tends to be dark with reflective piping, though.