ashvaghosha's view is fundamentally solipsistic , again in my opinion
i have a different interpretation of the significance of the colours, red is a unity of infinity and reality and the most potent and personally crucifying of the colours, though there can be a certain benignness to it
blue is sort of like a high energy coupling of infinity, dangerous and manic and only taking infinity in this high energy way
gold is new to me and i have yet to work it out, probably some illusory safe area!
white i usually take to be a sexually charged colour !