title: VSCode selection border color
body: <p>I am tweaking a color theme in vscode. I would like to be able to have the selection have a background color and a separate border color.</p>
  
  <p>I am unable to achieve this.</p>
  
  <p>editor.selectionBorder - does nothing
  editor.selectionHighlightBorder - highlight other instances of variables, but does not apply to the selection.</p>
  
  <p>Is there any other border options I am missing?</p>