Yellow is sunshine. It is a warm color, shining with optimism, enlightenment, and happiness and carrying the promise of a positive future. It instills energy and sparks creative thoughts. Its many shades can be used to effectively invoke different moods and create a pleasant atmosphere. While it works perfectly as the primary color, yellow often works best as a companion to other colors; to perk up a cooler, subdued palette, for a more natural, earthy flavor or outright flamboyance and excitement!