Examine source code of Aspen Rust WHITE

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Aspen Rust WHITE",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(255, 252, 247)",
      "toolbar_text": "rgb(207, 163, 55)",
      "frame": "rgb(152, 152, 97)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 234, 154)",
      "toolbar_field_text": "rgb(171, 117, 39)",
      "tab_line": "rgb(207, 163, 55)",
      "popup": "rgb(207, 163, 55)",
      "popup_text": "rgb(255, 251, 238)",
      "button_background_hover": "rgb(255, 234, 154)",
      "icons_attention": "rgb(83, 239, 230)",
      "popup_border": "rgb(255, 234, 154)",
      "toolbar_field_border_focus": "rgb(207, 163, 55)",
      "tab_loading": "rgb(207, 163, 55)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{63bfff87-fefc-4954-8230-58fd5574d1f6}"
    }
  }
}