Examine source code of Dead Trees Sunrise

{
  "name": "Dead Trees Sunrise",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "Trees4.jpg"
    },
    "colors": {
      "frame": "rgba(152, 168, 225, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(150, 166, 224, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(150, 166, 224, 0.07)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ead86a20-ef26-46af-b178-2b74797c52fd}"
    }
  }
}