title: Flutter Change Dropdown arrow color
body: <p>How to change Dropdown arrow color?</p>
  
  <p><strong>Here is what I want</strong>:</p>
  
  <p><a href="https://i.stack.imgur.com/ZnMbU.png" rel="noreferrer"><img src="https://i.stack.imgur.com/ZnMbU.png" alt="enter image description here"></a></p>
  
  <p><strong>This is what I get</strong></p>
  
  <p><a href="https://i.stack.imgur.com/wcdXu.png" rel="noreferrer"><img src="https://i.stack.imgur.com/wcdXu.png" alt="enter image description here"></a></p>
  
  <p><strong>My widget:</strong> </p>
  
  <pre><code>            DropdownButtonHideUnderline (
            child: DropdownButton&lt;String&gt;(
              isExpanded: true,
              value: dropdownValue,
              onChanged: (String newValue) {
                setState(() {
                  dropdownValue = newValue;
                });
              },
              items: &lt;String&gt;['Bank Deposit', 'Mobile Payment', 'Cash Pickup']
                  .map&lt;DropdownMenuItem&lt;String&gt;&gt;((String value) {
                return DropdownMenuItem&lt;String&gt;(
                  value: value,
                  child: Text(value),
                );
              })
                  .toList(),
            ),
          ),
  </code></pre>
  
  <p>I tried wrapping with Theme and changing Brightness, but it changes arrow from White to Black only. I want to use some other color.</p>