I had my workhorse powdercoated sky blue after its frame repair. Bought the 3M blue tape to decorate it with. Virtually an exact color match. The bike sports 10' of it but in daylight you can't even see it.

As Fietsbob said above, reflective colors work by subtraction. The many feet of blue are far less bright than the small amount of white on the white fender. Nevertheless, it is obvious watching the cars around me that his bike gets seen. Fun for a bike that is near stealth daytime.

Ben