Examine source code of Japan vector beautiful

{
  "name": "Japan vector beautiful",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "pngtree-japanese-japan-fresh-blue-image_17018.jpg"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(18, 120, 49, 1)",
      "toolbar": "rgba(219, 116, 116, 1)",
      "bookmark_text": "rgba(18, 120, 49, 1)",
      "toolbar_field_text": "rgba(18, 120, 49, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b091b8f1-768f-43fd-b278-6bdbf4d86de1}"
    }
  }
}