no “clear” is the absence of color. LOL your window glass has no color.
I think that’s referring to the binary (or hex) representation of white. Zero meaning no ‘color’ added. i.e. 0x0x0x0x
fwiw.
The hexidecimal code for white is #FFFFFF.
Black is #000000.
White is the absence of color only in certain instances. For example, white light is a mixture of the colors of the visible spectrum (and thus is all color).
But in general terms people sometimes think of white as colorless, but actually only clear would be colorless.