Examine source code of Graphite Light

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Graphite Light",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png",
        "images/1.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top",
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat",
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(248, 248, 248)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(85, 85, 85)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgb(219, 219, 219)",
      "toolbar_field_text": "rgb(85, 85, 85)",
      "tab_line": "rgb(0, 0, 0)",
      "popup": "rgb(219, 219, 219)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_active": "rgb(248, 248, 248)",
      "tab_loading": "rgb(0, 0, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b2812eaa-5ade-4775-879c-6a7d3a28bdd3}"
    }
  }
}