Examine source code of Panda Pizza

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Panda Pizza",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(223, 236, 237)",
      "toolbar_text": "rgb(12, 13, 13)",
      "frame": "rgb(161, 226, 232)",
      "tab_background_text": "rgb(1, 251, 251)",
      "toolbar_field": "rgba(6, 237, 247, 0.53)",
      "toolbar_field_text": "rgb(15, 14, 15)",
      "tab_line": "rgb(9, 249, 218)",
      "popup": "rgb(245, 249, 249)",
      "popup_text": "rgb(12, 13, 13)",
      "tab_loading": "rgb(9, 249, 218)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a76887f8-ca78-4bfc-acf0-61436171d70e}"
    }
  }
}