Examine source code of Blue Geek World

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "Blue World",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-021-775b159da029a74f5c76e835cd65e9dc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(35, 56, 69)",
      "toolbar_field": "rgb(19, 44, 52)",
      "toolbar_field_text": "rgb(9, 244, 240)",
      "tab_line": "rgb(245, 185, 10)",
      "popup": "rgb(14, 39, 61)",
      "popup_text": "rgb(98, 102, 183)",
      "tab_loading": "rgb(245, 185, 10)",
      "bookmark_text": "rgb(52, 72, 90)",
      "frame": "rgb(14, 39, 61)",
      "tab_background_text": "rgb(18, 90, 116)"
    }
  }
}