Purple can activate a child's creativity and imagination.
Purple is associated with... Courage, Confidence, Conquering, Protection, Safety, Mastery, Dignity, Strength, Power, Creativity, Wisdom, Intuition, Understanding, Gratitude, Healing, Spirituality, Empathy and the sense of service to others.
A combination of blue and red, purple is often considered the ideal color.
Blue is calming and expansive, while red is active and grounding. Red brings focus to the expansiveness of blue, and allows creativity to emerge. For this reason, purple is associated with inspiration and imagination.
Purple is said to link the individual and the universal.
And... most importantly, many children love the color purple.