Examine source code of Cosmic Universe

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "Universe",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left bottom"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(102, 26, 135)",
      "toolbar_field": "rgb(133, 0, 149)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(206, 9, 147)",
      "popup": "rgb(91, 6, 130)",
      "popup_text": "rgb(3, 248, 255)",
      "tab_loading": "rgb(206, 9, 147)",
      "bookmark_text": "rgb(3, 248, 255)",
      "frame": "rgb(78, 23, 194)",
      "tab_background_text": "rgb(255, 255, 255)"
    }
  }
}