Examine source code of Dreiecke / Triangles

{
  "name": "Dreiecke / Triangles",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "Dreiecke PNG.png"
    },
    "colors": {
      "frame": "rgba(227, 229, 232, 0)",
      "tab_background_text": "rgba(148, 148, 148, 1)",
      "toolbar": "rgba(0, 14, 209, 0.6)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(255, 255, 255, 0.8)",
      "toolbar_field_text": "rgba(0, 17, 255, 1)"
    }
  }
}