IOS How to make image from color

+ (UIImage *)imageWithColor:(UIColor *)color andSize:(CGSize)size {
    UIImage *img = nil;
   
    CGRect rect = CGRectMake(0, 0, size.width, size.height);
    UIGraphicsBeginImageContext(rect.size);
    CGContextRef context = UIGraphicsGetCurrentContext();
    CGContextSetFillColorWithColor(context,
                                   color.CGColor);
    CGContextFillRect(context, rect);
    img = UIGraphicsGetImageFromCurrentImageContext();
    [img retain];
    UIGraphicsEndImageContext();

    return img;
}

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