Examine source code of Magic Forest

{
  "name": "Magic Forest",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "1000044382.jpg"
    },
    "colors": {
      "frame": "rgba(48, 186, 217, 1)",
      "tab_background_text": "rgba(37, 82, 62, 1)",
      "toolbar": "rgba(0, 0, 0, 0.09)",
      "toolbar_field": "rgba(0, 0, 0, 0.16)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{821f84a1-395e-4782-a089-1c3eccdda099}"
    }
  }
}