protected static UIImage CreateColoredImage(UIColor color, UIImage mask)
{
var rect = new CGRect (CGPoint.Empty, mask.Size);
UIGraphics.BeginImageContextWithOptions (mask.Size, false, mask.CurrentScale);
CGContext context = UIGraphics.GetCurrentContext ();
mask.DrawAsPatternInRect (rect);
context.SetFillColor (color.CGColor);
context.SetBlendMode (CGBlendMode.SourceAtop);
context.FillRect (rect);
UIImage result = UIGraphics.GetImageFromCurrentImageContext ();
UIGraphics.EndImageContext ();
return result;
}
