What is “The Unexpected Red Theory”?

One of the biggest buzz terms on social media lately has been the “Unexpected Red Theory”; the theory that a room never fully looks complete until a hint of red is injected. Like finishing off an outfit with a pop of classic red lipstick. The concept is that red- even on a small scale- keeps an otherwise cool-hued palette from looking flat. In fact, the more low-key and “unexpected”, the better.