message: Colorize suggest-widget.
diff: @@ -19,5 +19,7 @@ monaco.editor.defineTheme("upterm-prompt-theme", {
  "editor.foreground": textColor,
  "editor.background": backgroundColor,
  "editor.lineHighlightBackground": backgroundColor,
  + "editorSuggestWidget.background": backgroundColor,
  + "editorSuggestWidget.highlightForeground": colors.blue,
  },
  });
  