Examine source code of playver finale

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "playver finale",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(239, 113, 125)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(188, 32, 47)",
      "tab_background_text": "rgb(255, 222, 224)",
      "toolbar_field": "rgb(237, 223, 225)",
      "toolbar_field_text": "rgb(154, 0, 170)",
      "tab_line": "rgb(185, 20, 37)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(103, 0, 113)",
      "ntp_text": "rgb(255, 255, 255)",
      "tab_selected": "rgb(251, 234, 236)",
      "tab_text": "rgb(0, 0, 0)",
      "tab_loading": "rgb(185, 20, 37)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e0cd76a4-ff8d-41be-9daa-b4379676f1d6}"
    }
  }
}