Examine source code of World Map

{
  "manifest_version": 2,
  "version": "4.0",
  "name": "World Map",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(16, 44, 50, 0.85)",
      "toolbar_text": "rgb(173, 186, 199)",
      "frame": "rgb(47, 90, 97)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(3, 20, 22, 0.85)",
      "toolbar_field_text": "rgb(173, 186, 199)",
      "tab_line": "rgb(247, 143, 30)",
      "popup": "rgb(3, 20, 22)",
      "popup_text": "rgb(173, 186, 199)",
      "tab_background_separator": "rgb(3, 20, 22)",
      "toolbar_field_border": "rgb(46, 46, 46)",
      "tab_loading": "rgb(247, 143, 30)"
    }
  }
}