Examine source code of Kittens 2017

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Kittens 2017",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(122, 130, 135, 0)",
      "toolbar_text": "rgb(203, 182, 90)",
      "frame": "rgb(29, 33, 22)",
      "tab_background_text": "rgb(207, 198, 157)",
      "toolbar_field": "rgba(146, 200, 230, 0)",
      "toolbar_field_text": "rgb(245, 245, 241)",
      "tab_line": "rgb(227, 152, 13)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(98, 102, 183)",
      "tab_loading": "rgb(227, 152, 13)"
    }
  }
}