Examine source code of Gateways to annihilation

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Gateways to annihilation",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg",
        "images/1.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left center",
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat-y",
        "repeat-y"
      ]
    },
    "colors": {
      "toolbar": "rgba(208, 139, 79, 0.33)",
      "toolbar_text": "rgb(239, 222, 214)",
      "frame": "rgb(32, 35, 71)",
      "tab_background_text": "rgb(205, 205, 247)",
      "toolbar_field": "rgba(239, 226, 214, 0.8)",
      "toolbar_field_text": "rgb(111, 81, 109)",
      "tab_line": "rgb(129, 66, 77)",
      "popup": "rgb(111, 81, 109)",
      "popup_text": "rgb(152, 118, 132)",
      "tab_loading": "rgb(129, 66, 77)"
    }
  }
}