Examine source code of Outrun2077

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Outrun",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(1, 7, 59)",
      "toolbar_text": "rgb(215, 226, 239)",
      "frame": "rgb(4, 6, 23)",
      "tab_background_text": "rgb(215, 226, 239)",
      "toolbar_field": "rgb(1, 7, 18)",
      "toolbar_field_text": "rgb(215, 226, 239)",
      "tab_line": "rgb(205, 35, 185)",
      "popup": "rgb(2, 4, 26)",
      "popup_text": "rgb(215, 226, 239)",
      "icons": "rgb(205, 35, 185)",
      "tab_text": "rgb(177, 39, 184)",
      "tab_loading": "rgb(205, 35, 185)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7f77eb40-712d-4a6c-88ee-1738b684102c}"
    }
  }
}