Examine source code of Dark Space

{
  "manifest_version": 2,
  "version": "2.0.1",
  "name": "Dark Space",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg",
        "images/1.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center top",
        "center top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat",
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(43, 43, 43)",
      "toolbar_text": "rgb(208, 225, 227)",
      "frame": "rgb(43, 43, 43)",
      "tab_background_text": "rgb(133, 141, 165)",
      "toolbar_field": "rgb(43, 43, 43)",
      "toolbar_field_text": "rgb(208, 225, 227)",
      "tab_line": "rgba(135, 84, 173, 0)",
      "popup": "rgb(43, 43, 43)",
      "popup_text": "rgb(208, 225, 227)",
      "frame_inactive": "rgb(43, 43, 43)",
      "icons": "rgba(161, 161, 161, 0.62)",
      "ntp_background": "rgb(43, 43, 43)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup_border": "rgb(43, 43, 43)",
      "sidebar_text": "rgb(195, 195, 195)",
      "sidebar": "rgb(43, 43, 43)",
      "tab_background_separator": "rgb(43, 43, 43)",
      "toolbar_bottom_separator": "rgb(43, 43, 43)",
      "toolbar_field_border_focus": "rgba(43, 43, 43, 0)",
      "toolbar_field_border": "rgb(43, 43, 43)",
      "toolbar_field_focus": "rgba(43, 43, 43, 0)",
      "toolbar_field_highlight_text": "rgb(255, 255, 255)",
      "toolbar_field_highlight": "rgb(131, 162, 214)",
      "toolbar_field_separator": "rgb(43, 43, 43)",
      "toolbar_top_separator": "rgba(231, 241, 223, 0)",
      "tab_loading": "rgba(135, 84, 173, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6b1c2507-0b81-43dc-a5d7-68a0c52d00bc}"
    }
  }
}