Color is the first thing we notice when we see a sign, ad, or logo. Whether we consciously think about it or not, color affects our mood and sets the contexts for our reactions to what we see. I, Paul, became aware of the influence of color when I was president of a research organization that among other subject, investigated the difference wall color had on how people interact in a room. In this same vein, research done by HubSpot showed 21% more people are more likely to click on a red button than a green one.