Examine source code of Adapta Nokto

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "Adapta Nokto",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(30, 59, 68)",
      "toolbar_field": "rgb(57, 101, 116)",
      "toolbar_field_text": "rgb(215, 228, 229)",
      "tab_line": "rgb(35, 193, 213)",
      "popup": "rgb(27, 56, 66)",
      "popup_text": "rgb(76, 201, 229)",
      "tab_loading": "rgb(35, 193, 213)",
      "bookmark_text": "rgb(76, 201, 229)",
      "frame": "rgb(15, 35, 54)",
      "tab_background_text": "rgb(41, 130, 146)"
    }
  }
}