Examine source code of Sweet Stocking

{
  "name": "Sweet Stocking",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Sweet Stocking.png"
    },
    "colors": {
      "frame": "rgba(61, 219, 255, 1)",
      "tab_background_text": "rgba(84, 138, 222, 1)",
      "toolbar": "rgba(61, 213, 255, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(61, 213, 255, 0)",
      "toolbar_field_text": "rgba(245, 98, 137, 1)",
      "tab_line": "rgba(237, 57, 99, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9b8a733d-3705-4320-bbfa-e2d6effcd4d4}"
    }
  }
}