Colors can elicit or reinforce moods. Psychologists call it Color Theory, which describes how individuals can vary in how they interpret colors, but there are some universal emotional associations to certain hues. Some psychologists even use chromotherapy to help patients.
Generally, there are two broad categories of colors. Hues closer to red are typically associated with energetic emotions like passion, love, and joy. Colors closer to blue are more calming, serene, and comforting.