Make color value determine light priority : r/factorio
Why do lamps with black and grey signals display white, instead of black and grey? It ruins all monitoring systems for black science, oil, etc. : r/ factorio
Why the lights look like this, can they be fixed? : r/factorio
So I take it black lamps don't work? : r/factorio
Circuits: How does lamp choose color with multiple signals? - Factorio Forums