Examine source code of Leviathan1

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Leviathan1",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(186, 196, 202)",
      "toolbar_text": "rgb(9, 8, 8)",
      "frame": "rgb(63, 110, 136)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(7, 7, 7)",
      "tab_line": "rgba(205, 36, 214, 0.94)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(98, 102, 183)",
      "ntp_background": "rgba(222, 224, 224, 0.77)",
      "tab_loading": "rgba(205, 36, 214, 0.94)"
    }
  }
}