Examine source code of Sand Dollar

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Sand Dollar",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(222, 206, 187)",
      "toolbar_text": "rgb(86, 66, 41)",
      "frame": "rgb(205, 181, 152)",
      "tab_background_text": "rgb(103, 79, 50)",
      "toolbar_field": "rgb(205, 181, 152)",
      "toolbar_field_text": "rgb(86, 66, 41)",
      "tab_line": "rgb(222, 206, 187)",
      "popup": "rgb(189, 157, 117)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(222, 206, 187)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{acfa9bc6-643b-41d7-b725-3d60e5e88b4a}"
    }
  }
}