Examine source code of Magical Glowing Forest

{
  "name": "Magical Glowing Forest",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "Magical Forest.png"
    },
    "colors": {
      "frame": "rgba(8, 31, 47, 1)",
      "tab_background_text": "rgba(208, 255, 184, 1)",
      "toolbar": "rgba(8, 31, 48, 0)",
      "bookmark_text": "rgba(208, 255, 184, 1)",
      "toolbar_field": "rgba(8, 31, 48, 0)",
      "toolbar_field_text": "rgba(48, 199, 106, 1)",
      "tab_line": "rgba(255, 248, 199, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{30de195e-cb15-4d70-9691-ecd95fcc2876}"
    }
  }
}