Aren't colors cultural associations?
Not two of us humans have the same perception of colors. Some of us can discern more shades than others, some less.
We learn color names from others calling these names to refer to things. And we give these names by referring to things. Color names are cultural.
We use color systems to refer to colors: RGB, sRGB, CMYK, Pantone, each useful for given purposes in a given community.
Colors *are* cultural associations.