Emphasis

I think that this image really shows emphasis. The red dot stands out from the rest of the image because it's red. That it is also outlined in white helps to set it apart from the green background. And red and green are on opposite sides of the color wheel, which means that they naturally conflict. Although the image is very simple, even with the two shades of green to look at, I think that it really gives us an idea of what emphasis is all about.