I used reflective vinyl pinstripes and High-Intensity Retro-Reflective (Conspicuity) tape on my Breezer. Both black and white pinstripes, there is a noticeable difference in the reflectivity between the two, but the black is still pretty reflective, and it is very difficult to see in daylight on a black frame.

Black pinstripes where used down the fork, chain stays, and seat stays. White was used along the rack, and to accent the fenders. I also ran a second strip of black along the fender, higher up than the white. You can see the differences below.

The yellow stickers are those Nathan Helmet stickers. They are pretty bright. I need to put more of them on my helmet.