Examine source code of Tancho

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Tancho",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat-y"
      ]
    },
    "colors": {
      "toolbar": "rgba(29, 82, 112, 0)",
      "toolbar_text": "rgb(112, 149, 248)",
      "frame": "rgb(188, 197, 222)",
      "tab_background_text": "rgb(253, 247, 246)",
      "toolbar_field": "rgba(189, 194, 212, 0.71)",
      "toolbar_field_text": "rgb(7, 7, 7)",
      "tab_line": "rgb(78, 114, 166)",
      "popup": "rgba(124, 150, 249, 0.8)",
      "popup_text": "rgb(190, 201, 223)",
      "frame_inactive": "rgba(51, 108, 254, 0)",
      "popup_highlight": "rgb(205, 135, 222)",
      "tab_loading": "rgb(78, 114, 166)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{aa1a1f88-781b-41f7-ad78-3b542a1a7483}"
    }
  }
}