Examine source code of Animated setting

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Animated setting",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(59, 67, 67, 0)",
      "toolbar_text": "rgb(250, 241, 136)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(208, 157, 1)",
      "toolbar_field": "rgba(0, 0, 0, 0)",
      "toolbar_field_text": "rgb(249, 255, 255)",
      "tab_line": "rgb(0, 62, 255)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(250, 241, 136)",
      "button_background_active": "rgb(4, 52, 200)",
      "button_background_hover": "rgb(64, 67, 47)",
      "frame_inactive": "rgba(0, 0, 0, 0)",
      "icons_attention": "rgb(69, 230, 10)",
      "icons": "rgb(2, 143, 251)",
      "popup_border": "rgb(0, 62, 255)",
      "tab_loading": "rgba(1, 255, 248, 0.97)",
      "tab_selected": "rgb(59, 63, 45)",
      "tab_text": "rgb(250, 241, 136)",
      "toolbar_field_border_focus": "rgb(2, 90, 251)",
      "toolbar_field_focus": "rgb(3, 18, 139)",
      "toolbar_field_text_focus": "rgb(250, 241, 136)",
      "toolbar_top_separator": "rgba(0, 0, 0, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{05e6a42b-1cf7-421f-a602-0c37ce76d889}"
    }
  }
}