Examine source code of Intense Green

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "Intense Green 1.1",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(46, 90, 54)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(46, 90, 54)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(43, 43, 43)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(43, 43, 43)",
      "popup": "rgb(43, 43, 43)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgb(43, 43, 43)",
      "button_background_hover": "rgb(43, 43, 43)",
      "ntp_background": "rgb(33, 66, 38)",
      "tab_selected": "rgb(43, 43, 43)",
      "tab_loading": "rgb(43, 43, 43)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{30719571-ce0d-49c5-bf38-1f6dc69fd18f}"
    }
  }
}