Examine source code of Sky Mountain View

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Mountain View",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(183, 200, 215)",
      "toolbar_text": "rgb(0, 24, 127)",
      "frame": "rgb(255, 255, 255)",
      "tab_background_text": "rgb(255, 239, 135)",
      "toolbar_field": "rgb(255, 241, 191)",
      "toolbar_field_text": "rgb(3, 0, 127)",
      "tab_line": "rgb(14, 0, 125)",
      "popup": "rgb(213, 232, 233)",
      "popup_text": "rgb(0, 144, 255)",
      "tab_loading": "rgb(14, 0, 125)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6b051c5b-eae1-4766-8fe0-f4357e69283b}"
    }
  }
}