My economy prof told me Cadillac/Ford(back in the bigger days 70's ect)found that old people could not really perceive the depth of colors at their age and had

My economy prof told me Cadillac/Ford(back in the bigger days 70's ect)found that old people could not really perceive the depth of colors at their age and had major preference for white shades. Since old people have money it caused a major shift towards white/black scheme cars