The document discusses how color can impact response and sales. It provides examples of companies that improved sales by changing colors on their websites and marketing materials from dark to lighter, warmer tones. The document also discusses how different colors convey different meanings and emotions, and how color choice is important for legibility, branding, and attracting versus annoying viewers. It emphasizes that high contrast between text and background improves readability, and that color symbolism should match the product or service being promoted.