Examine source code of Pastel Gradient Orange

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Pastel Gradient Orange",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "frame": "rgb(233, 206, 186)",
      "tab_background_text": "#000000"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c72ef429-e9dc-49ca-8df9-30ae797cd149}"
    }
  }
}