Examine source code of Dark Network

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "Dark Network",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(11, 29, 145, 0.71)",
      "toolbar_field": "rgb(152, 180, 223)",
      "toolbar_field_text": "rgb(7, 10, 49)",
      "tab_line": "rgb(7, 10, 49)",
      "popup": "rgb(152, 180, 223)",
      "popup_text": "rgb(2, 4, 32)",
      "tab_loading": "rgb(7, 10, 49)",
      "bookmark_text": "rgb(194, 197, 228)",
      "frame": "rgb(214, 207, 226)",
      "tab_background_text": "rgb(255, 255, 255)"
    }
  }
}