Examine source code of bathory self titled

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "bathory",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(215, 215, 215)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(111, 111, 111)",
      "popup": "rgb(34, 34, 34)",
      "popup_text": "rgb(255, 255, 255)",
      "ntp_background": "rgb(0, 0, 0)",
      "tab_loading": "rgb(111, 111, 111)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{72651b7a-db5a-4ca7-948e-8a400b10eef7}"
    }
  }
}