title: Change color of angular datepicker material component
body: <p>I am working on a angular material datepicker which will be on a black background. How do I change change the default color of the datepicker's icon, underline and placeholder text to all white color?  </p>
  
  <pre><code>&lt;mat-form-field&gt;
      &lt;input matInput [matDatepicker]="picker" placeholder="Choose a date"&gt;
      &lt;mat-datepicker-toggle [for]="picker" matSuffix&gt;&lt;/mat-datepicker-toggle&gt;
      &lt;mat-datepicker #picker&gt;&lt;/mat-datepicker&gt;
  &lt;/mat-form-field&gt;
  </code></pre>