There was an early home gaming system called the Vectrex that was based entirely around this. They got around the lack of color with clear plastic screen overla

There was an early home gaming system called the Vectrex that was based entirely around this. They got around the lack of color with clear plastic screen overlays. https://www.youtube.com/watch?v=ijc6afTifqI https://www.youtube.com/watch?v=ijc6afTifqI We had one when I was growing up as a kid. It was a pretty cool little machine.