Changing the color of the vertical line in quote text

Hello everyone. Can any tell me how to code a change in the color of the vertical line that appears automatically in quote text in the Avenir template? (Note that this is not a quote block.) Thanks very much!

Hi Steven, use this in CSS and style the color and width as you desire.

Would be nice if you'd click on the heart on the right hand side to tell me it worked.:
 

.sqs-block-html blockquote, .sqs-block-markdown blockquote {
  border-left: 5px solid #DCEAED;
}

 it worked for me like a charm