Lighten underscore syntax highlighting in vcs materialtheme

settings.json

  "editor.tokenColorCustomizations": {
    "[Material Theme Darker High Contrast]": {
      "textMateRules": [
        {
            "scope": [
                "comment.unused.elixir",
            ],
            "settings": {
                "foreground": "#b5c3a3",
            }
        },
        {
          "scope": [
              "comment.wildcard.elixir",
          ],
          "settings": {
              "foreground": "#88ee88",
              "fontStyle": "bold",
          }
        },

      ],
      "comments": "#848866",
    },
  },