Examine source code of Bison Herd

{
  "name": "Bison Herd",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "BisonHerdH1.jpg"
    },
    "colors": {
      "frame": "rgba(163, 156, 130, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(163, 156, 130, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(163, 157, 130, 0.06)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9f4e2bc7-d95a-4ef5-90a2-11d236242e70}"
    }
  }
}