title: Text is always black with any imported font in Unity
body: <p>I'm using UI toolkit.<br />
  I have imported few different fonts, and set up a label. But when I assign custom font and font asset, changing text color becomes unresponsive and text is stuck on black.</p>
  <p>There are no additional styles.</p>
  <p>I tried - swapping different material in font asset to many different ones, nothing changes. Tried adding styling change in .uss, nothing changes.</p>
  <p><a href="https://i.stack.imgur.com/cRzR4.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/cRzR4.png" alt="enter image description here" /></a></p>