The color schemes we used are similar, I kind of copied mine from this image on Wikipedia: https://en.wikipedia.org/wiki/Trigonometric_functions#/media... I wonder if the author of this site did the same?
What would be REALLY cool would be a connection between this diagram and the graphs of the functions: https://en.wikipedia.org/wiki/Trigonometric_functions#/media...
something like this: https://www.geogebra.org/m/cNEtsbvC