ios – 如何从Plist加载UIColor

+ (UIColor *)colorFromString:(NSString *)hexString {    
    NSScAnner *scAnner = [NSScAnner scAnnerWithString:hexString];
    unsigned hex;
    BOOL success = [scAnner scanHexInt:&hex];

    if (!success) return nil;
    if ([hexString length] <= 6) {
        return UIColorFromRGB(heX);
    } else {
        unsigned color = (hex & 0xFFFFFF00) >> 8;
        CGFloat alpha = 1.0 * (hex & 0xFF) / 255.0;
        return UIColorFromRGBA(color,alpha);
    }
}