Examine source code of Sunderland (Animated)

{
  "name": "Sunderland (Animated)",
  "manifest_version": 2,
  "version": "6.0",
  "theme": {
    "images": {
      "theme_frame": "oie_oie_overlay.gif"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(0, 0, 0, 0.45)",
      "bookmark_text": "rgba(255, 0, 0, 1)",
      "toolbar_field": "rgba(255, 255, 255, 0.24)",
      "toolbar_field_text": "rgba(255, 0, 0, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a6edaded-f2ea-4c56-966e-c15866f5f702}"
    }
  }
}