I can't even figure out the proper grammar for writing this, let alone what it's called.

I've seen restaurants using chandelier style lighting directly over booths, and they use lightbulbs that have some kind of opaque treatment on the bottom part (or top - the rounded part). It looks kind of silvery - almost as though the bulb were dipped into liquid silver. It is completely opaque.

I'm trying to find those darn bulbs!

I've asked at restaurants that use them but no one knows anything. I've googled every term I can think of (shaded bulb, lidded bulb, opaque coating bulb, restaurant lighting, etc.) and can't find the right thing.

Anyone know anything?