Examine source code of Bean, Mr

{
  "name": "Bean, Mr",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "bean.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(250, 228, 171, 0.7)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(250, 228, 171, 0.59)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{083a6f03-fd96-4cad-a0c7-c658ac866a97}"
    }
  }
}