Silver Bullet is a frosty white, I didn't have the same probs as the reviewer below me, mine was totally opaque in two coats and looks very elegant, looks great with a glitter top coat too.
In the bottle, Silver Bullet looks like a very, very pale silver frost. On the nail it's an extremely sheer white pearl frost. Rimmel claims that all of the 60 Seconds line are "one-coat nail polish." As much as I love the 60 Seconds polishes, that's pretty much a lie... most of them take two coats to be opaque, and Silver Bullet needs at least four or five. Yes, it is one of those nightmarishly sheer polishes that is a huge PITA to wear solo, but is too streaky to layer over other colors. I've given up on it for now, but will try layering it over white (so the streaks are not so noticeable, and the pearl color can stand out on its own) and update my review at a later date.