title: Changing a color resource programmatically?
body: <p>I got a little circle TextView from Vicky Vicent ("<a href="https://stackoverflow.com/questions/25203501/android-creating-a-circular-textview/25203778">Android: Creating a Circular TextView?</a>")
  In my situation this one should show a Level and I would like to define the background color for certain areas by myself. How can I change this one with my Activity?</p>
  
  <pre><code>&lt;solid android:color="#9FE554" /&gt;
  </code></pre>