When preparing slides for a presentation, choose your colors with care. Get a color wheel—a universally accepted arrangement of colors that graphic artists use. Choose foreground and background shades that complement each other; these appear opposite each other on the color wheel. Never blend colors that appear near each other on the wheel, because they’ll compete and make it hard for viewers to read the slide. Blues and greens work well for background. Reds and oranges draw attention. But don’t go overboard. Use restraint and stick to a few colors throughout your presentation. Unify each visual by choosing the same color for the slide heading and the bullets.