Examine source code of Touhou Compilation

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Touhou Compilation",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0.6)",
      "toolbar_text": "rgb(159, 107, 232)",
      "frame": "rgb(159, 107, 232)",
      "tab_background_text": "rgb(96, 206, 255)",
      "toolbar_field": "rgba(0, 0, 0, 0.5)",
      "toolbar_field_text": "rgb(96, 206, 255)",
      "tab_line": "rgb(159, 107, 232)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(159, 107, 232)",
      "button_background_active": "rgba(0, 0, 0, 0)",
      "tab_loading": "rgb(159, 107, 232)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fc6cfec9-f87b-493d-9f35-2fbc29df5210}"
    }
  }
}