Examine source code of Degu Dark Clean

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Degu Dark Clean",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(24, 24, 24)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(24, 24, 24)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(41, 41, 42)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(62, 62, 62)",
      "popup": "rgb(24, 24, 24)",
      "popup_text": "rgb(247, 247, 247)",
      "tab_loading": "rgb(62, 62, 62)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{be5e0ca6-0869-4779-98b7-f0dc9a45e740}"
    }
  }
}