Allows on the fly change the properties of an image

Adjust an Image

public static UIImage AdjustImage(RectangleF rect,UIImage template, CGBlendMode mode,float red,float green,float blue,float alpha )
{
	using (var cs = CGColorSpace.CreateDeviceRGB ()){
		using (var context = new CGBitmapContext (IntPtr.Zero, (int)rect.Width, (int)rect.Height, 8, (int)rect.Height*4, cs, CGImageAlphaInfo.PremultipliedLast)){
			
			context.TranslateCTM(0.0f,0f);
			//context.ScaleCTM(1.0f,-1.0f);
			context.DrawImage(rect,template.CGImage);
			context.SetBlendMode(mode);
			context.ClipToMask(rect,template.CGImage);
			context.SetRGBFillColor(red,green,blue,alpha);
			context.FillRect(rect);				
			
			return UIImage.FromImage (context.ToImage ());
		}
	}
}