Examine source code of The stone wall

{
  "name": "The stone wall",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "The-stone-wall.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(199, 37, 37, 1)",
      "toolbar": "rgba(85, 224, 155, 0.65)",
      "bookmark_text": "rgba(219, 40, 40, 1)",
      "toolbar_field_text": "rgba(14, 240, 202, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b76d999a-4959-4f84-a252-67f06a3884c5}"
    }
  }
}