@Suty False. No, it doesn't; and this is still the reason you don't get a subscription from me. Blue is as blue on a black background as it is on a white background. If you want to actually introduce color theory and talk about the difference in value between blue and black, then you already know there are perceptual spectra you can drop in as replacements for the ones you're using. This is a solved problem and you're telling me it's not.