title: How to convert color code into media.brush?
body: <p>I have a rectangle that i want to fill with a color. When i write <code>Fill = "#FFFFFF90"</code> it shows me an error:</p>
  
  <blockquote>
    <p>Cannot implicitly convert type 'string' to 'System.Windows.Media.Brush</p>
  </blockquote>
  
  <p>Please give me some advice.</p>