Sean Carroll has a video about gauge theory (2020) in his series about Greatest Ideas of the Universe, where he claims that early in the development of quantum chromodynamics, some physicists tried to impose a different color charge scheme: red, white and blue, instead of the usual additive color scheme red, green, blue. Taken from the transcript [minute 3]:
[...] quarks come in three colors. Of course the idea of colors, let's say: red, green and blue (There was a brief movement movement to make it red, white and blue, but that was considered a little jingoistic so red, green and blue was a little bit more physics oriented). This is an idea from Murray Gell-Mann, the famous physicist. He was one of the co-inventors of quarks and the idea is [...]
Are there sources to back this up? Why would somebody use white instead of green?
As pointed in the comments this might be related to the colors of the US flag (red, white and blue) considering the nationality of Gell-Man and Zweig.