Features: Color Wheel - Activity - Fun Facts - Book List Content Consultants - Safe Web sites at www.FactHound.comStandards: Core Knowledge Visual Arts Kindergarten and Grade 1: Observe how colors can create different feelings and how certain colors can seem "warm" (red, orange, yellow) or "cool" (blue, green, purple). Know that red, yellow, and blue are commonly referred to as the "primary colors," and that blue + yellow = green; blue + red = purple; red + yellow = orange; mixing equal parts of red, yellow, and blue produces black.