NSString *color = model.display_color;
long colorLong = strtoul([color cStringUsingEncoding:NSUTF8StringEncoding], 0, 16);
// 通过位与方法获取三色值
int R = (colorLong & 0xFF0000 )>>16;
int G = (colorLong & 0x00FF00 )>>8;
int B = colorLong & 0x0000FF;
UIColor *wordColor = [UIColor colorWithRed:R/255.0 green:G/255.0 blue:B/255.0 alpha:1.0];