Changing lamp colors

[Harkonnen604]

I saw many screenshots with lamps having different colors, but can't see how to set this up. I thought it's built into vanilla, is it a mod?

BTW, would be very nice if lamps had a checkbox "Show on map", this way some critical information about the factory could be seen from everywhere.

[Neemys]

As said here : https://wiki.factorio.com/index.php?title=Lamp

You need to send circuit network signal to the Lamp. When choosing signal in last tab you have color signal.

Edit : It's in vanilla since 0.13, before you need a mod

[Harkonnen604]

Thanks! I thought neutral lamps may also have colors