An even better idea than reflectors is DOT reflective tape. I like the safety reflectors provide at night but hate the appearance of them in the day. I put the tape (silver) on and it is essentially invisible during the day but illuminates more than a reflector. I did leave two reflectors on at the neck of the frame Here's some examples:
Bike has reflective tape on forks (can't see it)
Picture I took a few minutes ago (note forks and over battery)
