Examine source code of lightnin

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "lightnin",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left top"
      ],
      "additional_backgrounds_tiling": [
        "repeat-x"
      ]
    },
    "colors": {
      "toolbar": "rgba(22, 72, 75, 0.04)",
      "toolbar_text": "rgb(230, 253, 208)",
      "frame": "rgb(62, 90, 104)",
      "tab_background_text": "rgb(234, 237, 244)",
      "toolbar_field": "rgba(46, 29, 1, 0.03)",
      "toolbar_field_text": "rgb(212, 192, 160)",
      "tab_line": "rgb(210, 158, 16)",
      "popup": "rgba(76, 69, 45, 0.73)",
      "popup_text": "rgb(250, 244, 210)",
      "ntp_background": "rgba(42, 33, 22, 0.68)",
      "tab_loading": "rgb(210, 158, 16)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f1e7f4be-2f0e-4227-a044-ceba5b6efb7c}"
    }
  }
}