Examine source code of :3 (VERY AWESOME)

{
  "manifest_version": 2,
  "version": "1.0",
  "name": ":3",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(29, 0, 65)",
      "toolbar_text": "rgb(22, 89, 207)",
      "frame": "rgb(29, 0, 65)",
      "tab_background_text": "rgb(92, 29, 139)",
      "toolbar_field": "rgb(76, 26, 113)",
      "toolbar_field_text": "rgb(255, 71, 203)",
      "tab_line": "rgb(76, 26, 113)",
      "popup": "rgb(29, 0, 65)",
      "popup_text": "rgb(22, 89, 207)",
      "tab_loading": "rgb(76, 26, 113)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fb655dd6-a5a7-4217-bd27-0edb640084d7}"
    }
  }
}