A large crowd of runners showed its true colors Sunday — green, purple and other hues, which were mixed with cornstarch and sprayed onto the runners. Color Me Rad, a 5-kilometer run, took place at the soccer fields near John Thurman Field and at the Modesto Municipal Golf Course. It was the latest example of a trend in which the race is less about running and more about what you look like when it’s done. Dozens of Color Me Rad events are taking place this year across the United States, and several other nations have their own versions. As the organizers’ website puts it, “Color Me Rad is a 5K that fires off in a blaze of color bombs, color cannons, color mortars and multitoned courses that guarantee your outlook will be brighter, your boyfriend will be more affectionate, your boss will finally remember your name, the hair on your head will grow back and the hair on your back will fall out, and your gray outlook will turn green like a spring morning.” More information is at www.colormerad.com.