BLK=Black黑色ORN=Orange橙色WHT= White白色BLU= Blue蓝色PNK= Pink粉红色YEL= Yellow黄色BRN= Brown棕色PPL=Purple紫色GRA=Gray灰色RED=Red红色氏拦GRN=Green绿色TAN=褐色段兆DK=Dark深歼燃胡色 LT=Light浅色
economic efficiency and benefit