The document discusses the color spectrum and different types of colors. It explains that the spectrum consists of red, orange, yellow, green, blue, purple, and indigo arranged in order. Primary colors are red, yellow and blue which can be mixed to create secondary colors of orange, green and purple. Tertiary colors result from mixing primary and secondary colors adjacent on the color wheel. Complimentary colors are opposite each other on the wheel, and mixing them creates brown. The document provides tips for using pastels including mixing dark values with primary or secondary colors instead of black or brown.