Examine source code of Windows Storm

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Windows Storm",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(38, 37, 36)",
      "toolbar_text": "rgb(202, 194, 190)",
      "frame": "rgb(38, 37, 36)",
      "tab_background_text": "rgb(202, 194, 190)",
      "toolbar_field": "rgb(38, 37, 36)",
      "toolbar_field_text": "rgb(202, 194, 190)",
      "tab_line": "rgb(64, 63, 61)",
      "popup": "rgb(38, 37, 36)",
      "popup_text": "rgb(202, 194, 190)",
      "tab_loading": "rgb(64, 63, 61)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f03bd06e-91b7-495b-9f3d-75ca935bc70b}"
    }
  }
}