Color theory in interior design involves organizing colors on a color wheel. The color wheel consists of primary colors like red, yellow and blue. Secondary colors are created by mixing primary colors, like green, orange and purple. Tertiary colors are made from primary and secondary colors. Warm colors represent energy and action while cool colors represent calmness. Color schemes in interior design include complementary, which pairs opposite colors, and triadic, which uses three colors evenly spaced on the color wheel. Distemper paint is a cheaper option for cement walls that lasts 3-4 years. Emulsion paint is water-based and easier to clean than oil-based paints. Enamel paint is oil-based and best for metal and