The app I used to make this video: Every Color Your Monitor Can Show You
The code is pretty messy. It was an older project which I kind of forgot about and I just quickly updated it. The code is not commented and there are probably bugs and budget solutions. I figured that maybe someone would want to do something with this idea so I decided to share it.
Currently it cycles through every color and saves every frame as jpg into P:/Stuff/ColorImages. You will have to change this for it to work, and you will probably want to disable the recording feature all together. Visit releases for a version that does not save any frames and just loops through every color.