We often use colours to indicate moods. For example, red evokes feelings of intimacy, energy and passion; orange feelings of togetherness. Yellow makes you cheerful. And you create a feeling of peace with natural colours like beige, grey, white, black and brown.
Cool colours like turquoise, blue and green have a refreshing effect. They are relaxing and give a feeling of space. Pink, lilac and violet are sweet colours and strengthen your intuition.
In short, colours have an effect on your emotions.