gistfile1.scss

$bgcolor:cyan;
.sidebar{ 
  @if  $bgcolor==blue {background-color:#0000ff; color:#ffffff;}
  @else if $bgcolor==red {background-color:#ff0000; color:#ffffff;}
  @else if $bgcolor==cyan{background-color: #00ffff; color:#cccccc;}
  @else {background-color:#ffffff;color:#000000;}
}