At the dawn of the smartphone era, serious smartphones were black or gray and "stupid" phones got the bright hues. These days, splashes of color liven up portfolios of black, and metallic silver and gold.
We realize that "wood" isn't a color, strictly speaking. Nevertheless, these unique Moto X (2014) finishes separate your phone from the herd. The Moto Maker website gives you dozens of options for color-customizing the backing and trim.