Examine source code of Verdigris Spawn

{
  "theme": {
    "images": {
      "theme_frame": "VerdigrisSpawn-Header.jpg"
    },
    "colors": {
      "frame": "#2dfba5",
      "tab_background_text": "#2dfba5"
    }
  },
  "version": "2.0",
  "name": "Verdigris Spawn",
  "manifest_version": 2
}