Examine source code of Car straight line texture

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Car straight line texture",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(193, 218, 233)",
      "toolbar_text": "rgb(33, 8, 117)",
      "frame": "rgb(14, 49, 74)",
      "tab_background_text": "rgb(233, 231, 241)",
      "toolbar_field": "rgb(226, 233, 237)",
      "toolbar_field_text": "rgb(9, 12, 98)",
      "tab_line": "rgb(248, 112, 140)",
      "popup": "rgb(7, 13, 87)",
      "popup_text": "rgb(98, 102, 183)",
      "tab_loading": "rgb(248, 112, 140)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{69e234ce-be30-414f-86a7-7a733b115ad9}"
    }
  }
}