Colored crosswalks might have themes that reflect the immediate area. For instance, Chengdu had a red-and-white zebra crossing with hearts painted on it, reflecting its location near a junction of two rivers. In Curitiba, a crosswalk with its bars irregularly painted like a barcode served as an advertisement for a nearby shopping center, but was later painted over. A pedestrian scramble in the Chinatown section of Oakland, California, is painted with red-and-yellow colors to signify the colors of the flag of China.