Many words could be used to describe this luminous yellow, but there's one that captures its mood best of all—optimistic. "This color can fill a room with light and awaken all five senses," Sue Kim notes. Called Daisy Spell at Lowe's and Dear Melissa at Ace Hardware and independent stores, the cheerful hue can be paired with floral fabrics for a laid-back room with traditional style. Want to make it a bit more modern? Try sleek black and white accents instead.