Sometimes it's fun to shoot color for color's sake. When the skies are clean and blue and the sun is direct the saturation and color purity makes me want to grab a camera and get outside. Science tells us that the act of taking long walks is a booster for our cognitive processes and creates a sense of optimism and well being. Doing these walks with a camera over one shoulder is an amplifier of these effects. I recommend a daily dose. The happiest photographers I know are the ones who are always engaged in some aspect of their process, from the walk to the edit, it's all good.