title: AngularMaterial - How to set background-color : accent in css or scss?
body: <p>I have a table in AngularMaterial (5.x) and I need to set a hover and a selected row background color using primary and accent colors defined by themes.</p>
  
  <p>But I can't call in my css   <code>background-color: mat-color($accent);</code> as it's telling me that $accent is not defined.</p>
  
  <p>I tried to add <code>@import '~@angular/material/theming';</code> but still get the issue.
  I get a look at <a href="https://material.angular.io/guide/theming-your-components" rel="nofollow noreferrer">Angular Material Theming</a> but didn't find a solution.</p>
  
  <p>Can you please help me ?</p>
  
  <p>Thanks for your help !
  Regards,
  Mike</p>