Examine source code of Chocolate

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "Chocolate (v1.1)",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(80, 66, 66)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(16, 16, 16)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(42, 33, 33)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(28, 36, 24)",
      "popup": "rgb(80, 66, 66)",
      "popup_text": "rgb(255, 255, 255)",
      "toolbar_bottom_separator": "rgb(26, 25, 25)",
      "tab_loading": "rgb(28, 36, 24)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8f63c0a7-9832-41c4-a296-860abf6d1696}"
    }
  }
}