To make the same colors with light instead of paint I had to use red, green, and blue, not yellow. It was until much later when trying harness banks of RGB LEDs that this knowledge became useful.

Although generally used in monochrome mode, it supports a color graphic card to output RGB signals via its male DB15 connector. DEC Rainbow 100 to Princeton Ultrasync adapter. With strain-relief ...

Before its ruling concerning same-sex marriages, the Fukuoka District Court ordered visitors to remove or cover up anything showing rainbow colors, the symbol for the LGBT rights movement.