title: How to customize my Slider widget's thumb color in flutter?
body: <p>I want to change the color of the circular part of my widget. This color should be different from the <code>activeColor</code> and <code>inactiveColor</code> colors. This is my current code:</p>
  
  <pre><code>Slider(
    value: sliderValue.toDouble(),
    max: 100.0,
    min: 0.0,
    activeColor: Colors.red,
    inactiveColor: Colors.grey,
    onChanged: (double newValue) {
      setState(() {
        sliderValue = newValue.round();
      });
    },
  ),
  </code></pre>
  
  <p>Below is the resulting slider:</p>
  
  <p><a href="https://i.stack.imgur.com/XLWfZ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/XLWfZ.png" alt="enter image description here"></a></p>
  
  <p>This is my goal:</p>
  
  <p><a href="https://i.stack.imgur.com/QLHEJ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/QLHEJ.png" alt="enter image description here"></a></p>
  
  <p>Help please.</p>