What other items have lost brass?

[Survager]

Today I played and noticed that when parsing a yellow ceiling lamp, I get only iron and electrical parts.

 

Is this a mistake, or now it makes no sense to disassemble the yellow ceiling lights?

[ktr]

I've encountered overhead lights that *look* yellow when lit but gave no brass. I started checking ones that are not lit in the same POI to see if they look like brass fixtures and so far, they've all been iron ones and look like iron ones. My guess is that it might be something about the lighting with that particular light fixture that makes it look like a brass fixture when they're on, but they're possibly not.