Examine source code of Kewl

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Kewl",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-036-40a272fe657f748396e017c7a64ee2dc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(120, 136, 94)",
      "toolbar_text": "rgb(207, 246, 0)",
      "frame": "rgb(39, 39, 39)",
      "tab_background_text": "rgb(207, 246, 0)",
      "toolbar_field": "rgb(39, 39, 39)",
      "toolbar_field_text": "rgb(207, 246, 0)",
      "tab_line": "rgb(207, 246, 0)",
      "popup": "rgb(39, 39, 39)",
      "popup_text": "rgb(120, 136, 94)",
      "tab_loading": "rgb(207, 246, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1bc79640-b4c2-48a4-8791-12624ea92755}"
    }
  }
}