Continuing its reign atop the "most popular" list, blue once again made an index of 2014's most prevalent colors. One possible reason for this blue's dominance? It's the color of trust -- which during a time of economic and social unrest makes it an especially attractive hue. As with past years, shades of blue-green (teal, turquoise) are growing in popularity, but expect to see more monochromatic schemes of mid-tone blues.