Examine source code of Moonlight Swim

{
  "name": "Moonlight Swim",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Moonlight Swim.png"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(207, 237, 255, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "bookmark_text": "rgba(207, 237, 255, 1)",
      "toolbar_field": "rgba(0, 0, 0, 0)",
      "toolbar_field_text": "rgba(112, 207, 255, 1)",
      "tab_line": "rgba(112, 207, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{803f4937-4753-41a7-beec-d17d26ab667a}"
    }
  }
}