Examine source code of nothing.

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "nothing.",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(200, 200, 200)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(150, 150, 150)",
      "toolbar_field": "rgb(20, 20, 20)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(82, 110, 103)",
      "popup": "rgb(20, 20, 20)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgba(0, 255, 191, 0.6)",
      "button_background_hover": "rgb(82, 110, 103)",
      "icons_attention": "rgba(0, 255, 191, 0.6)",
      "ntp_background": "rgb(20, 20, 20)",
      "ntp_text": "rgb(255, 255, 255)",
      "sidebar_border": "rgb(50, 50, 50)",
      "sidebar_text": "rgb(255, 255, 255)",
      "sidebar": "rgb(20, 20, 20)",
      "tab_loading": "rgba(0, 255, 191, 0.6)",
      "toolbar_bottom_separator": "rgb(0, 0, 0)",
      "toolbar_field_border_focus": "rgb(50, 50, 50)",
      "toolbar_field_focus": "rgb(20, 20, 20)",
      "toolbar_field_highlight": "rgb(82, 110, 103)",
      "toolbar_field_separator": "rgb(82, 110, 103)"
    }
  }
}