Examine source code of Red Forest

{
  "name": "Red Forest",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Red Forest.jpg"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(255, 130, 92, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "toolbar_field": "rgba(0, 0, 0, 0)",
      "toolbar_field_text": "rgba(250, 231, 60, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8a635506-40b7-4c05-91d6-d12c74eda142}"
    }
  }
}