+(UIImage *)buttonImageFromColor:(UIColor *)color{
CGRect rect = CGRectMake(0, 0, 2, 2);
UIGraphicsBeginImageContext(rect.size);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetFillColorWithColor(context, [color CGColor]);
CGContextFillRect(context, rect);
UIImage *img = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext(); return img;
}