No, but your designers have decided instead of cornflower blue, they want it to be aqua instead. Have fun searching for all variants of the color in your stylesheets—including CSS varsity, hex codes and rgba variants. In Tailwind, all you need to do is update the config file, and it'll apply to backgrounds, text, shadows, anything.
Well that's why we use CSS variables and any change would apply everywhere and also give us semantic information with naming like color-primary or color-surface.