title: uwp acrylic tint color black appears dark gray
body: <p>In my uwp app I am trying to use the Acrylic Brush, I made a custom one because the default ones are not working for me. But if you notice here I have attached image from Microsoft docs and on right side is window of my app showing acrylic completely different on same background.</p>
  <p><a href="https://i.stack.imgur.com/6rhS9.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/6rhS9.png" alt="comparing" /></a></p>
  <p><strong>Code</strong></p>
  <pre><code> &lt;AcrylicBrush
                              x:Key=&quot;AppBackgroundAcrylicBrush&quot;
                              BackgroundSource=&quot;HostBackdrop&quot;
                              FallbackColor=&quot;Black&quot;
                              TintColor=&quot;Black&quot;
                              TintLuminosityOpacity=&quot;0.1&quot;
                              TintOpacity=&quot;1&quot; /&gt;
  </code></pre>
  <p>After that I tried luminosity to be 0.9 and now it looks dark grayish. But I want it to look <strong>jet black</strong> color Acrylic with small transparency. Basically I want it to look like as the image shows on left side as in Microsoft docs with 10% luminosity and 100% tint opacity.</p>
  <p><a href="https://i.stack.imgur.com/hOyJJ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/hOyJJ.png" alt="enter image description here" /></a></p>
  <p><strong>Code</strong></p>
  <pre><code>   &lt;AcrylicBrush
                              x:Key=&quot;AppBackgroundAcrylicBrush&quot;
                              BackgroundSource=&quot;HostBackdrop&quot;
                              FallbackColor=&quot;Black&quot;
                              TintColor=&quot;Black&quot;
                              TintLuminosityOpacity=&quot;0.9&quot;
                              TintOpacity=&quot;1&quot; /&gt;
  </code></pre>
  <p>Docs: <a href="https://docs.microsoft.com/en-us/windows/uwp/design/style/acrylic" rel="nofollow noreferrer">https://docs.microsoft.com/en-us/windows/uwp/design/style/acrylic</a></p>