Examine source code of Steel Mac1

{
  "name": "Steel Mac1",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Theme FF1.png"
    },
    "colors": {
      "frame": "rgba(70, 114, 214, 0)",
      "tab_background_text": "rgba(145, 55, 55, 1)",
      "toolbar": "rgba(204, 200, 200, 0.07)",
      "bookmark_text": "rgba(145, 51, 51, 1)",
      "tab_line": "rgba(168, 62, 62, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a5066af1-7bb5-4c30-ac73-d46be6a38e13}"
    }
  }
}