Examine source code of Morgen V2

{
  "name": "Mercedes SLS AMG Miku",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Third Impact.jpg"
    },
    "colors": {
      "frame": "rgba(17, 31, 30, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(17, 31, 30, 1)",
      "bookmark_text": "rgba(227, 57, 57, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4e8c8d52-b45b-4b4d-8be9-8057659a0417}"
    }
  }
}