message: Add background color to highlights
diff: @@ -199,10 +199,12 @@ export class VSCodeEditor implements Editor {
  const decoration = vscode.window.createTextEditorDecorationType({
  light: {
  border: `1px solid ${color.light}`,
  + backgroundColor: color.light,
  overviewRulerColor: color.light
  },
  dark: {
  border: `1px solid ${color.dark}`,
  + backgroundColor: color.dark,
  overviewRulerColor: color.dark
  },
  overviewRulerLane: vscode.OverviewRulerLane.Right
  