Retro style decorating usually has a fun, lively feel to it, with bright colors, wild designs, and an overall sense of flair. But the true retro style decorating actually encompasses several decades of style and the term itself is used to describe almost any interior decorating themes that are influenced by trends and styles from the past. There’s nothing laid-back or casual about retro-style decorating. Moreover, it is loud, busy, and most definitely funky.