Examine source code of Red Rope Bundles

{
  "name": "Red Rope Bundles",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "lots-of-red-rope.png"
    },
    "colors": {
      "frame": "rgba(99, 27, 25, 1)",
      "tab_background_text": "rgba(255, 168, 168, 1)",
      "toolbar": "rgba(102, 49, 47, 1)",
      "bookmark_text": "rgba(255, 137, 133, 1)",
      "toolbar_field": "rgba(161, 116, 116, 1)",
      "toolbar_field_text": "rgba(69, 19, 17, 1)",
      "tab_line": "rgba(255, 112, 112, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{af2b4182-665d-4d88-92df-f65a278adbb4}"
    }
  }
}