It is not necessary that a web design work well with only one color scheme. There are many mechanisms of web architecture that allow designs to work well with any color scheme a user might prefer, and CSS adds "forced colors mode" for preferences, such as for "Dark Mode". Although designers rarely utilize it, this technical flexibility is a product of the web architect's concern for accessibility and user preference empowerment. Wikipedia is an example of a site that allows for almost total customization of its CSS color scheme, available through the site’s preferences page.