Examine source code of Sunsets over beach

{
  "name": "Sunsets-over-beach",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Sunsets-over-beach.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(92, 98, 153, 1)",
      "toolbar": "rgba(114, 90, 224, 0.61)",
      "bookmark_text": "rgba(63, 35, 219, 1)",
      "toolbar_field": "rgba(166, 163, 209, 1)",
      "toolbar_field_text": "rgba(24, 45, 240, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fbf46996-c961-48a6-a495-833f7b672bc0}"
    }
  }
}