Examine source code of lightnin'

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "lightin'",
  "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(118, 56, 4, 0.03)",
      "toolbar_field_text": "rgb(160, 212, 169)",
      "tab_line": "rgb(163, 33, 8)",
      "popup": "rgba(89, 70, 47, 0.68)",
      "popup_text": "rgb(247, 242, 243)",
      "ntp_background": "rgba(42, 33, 22, 0.68)",
      "tab_loading": "rgb(163, 33, 8)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8b1d2df6-7cc7-45bc-9214-9cab9185f154}"
    }
  }
}