I've noticed that Electric Crushers glow at night when active, as if they were a burner machine consuming burnable fuel. Might be an oversight.

Steam Crushers and Steam Assemblers also glow at night when active, even though they consume steam rather than burnable fuel.

It's possible these are all intended and there's a reason. It just seemed odd to me.

I also thought that perhaps it was simply the way the game engine was coded, that burnable fuel and steam powered machines glow at night by default, but that doesn't explain the electric crusher. This suggests to me that it may be an inconsistency in the machine prototypes, so I thought I'd report it.