Examine source code of Geometry Dash

{
  "name": "Geometry Dash",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "cube_113.png"
    },
    "colors": {
      "frame": "rgba(133, 7, 179, 1)",
      "tab_background_text": "rgba(128, 128, 128, 1)",
      "toolbar": "rgba(19, 0, 26, 0.29)",
      "bookmark_text": "rgba(153, 153, 153, 1)",
      "toolbar_field": "rgba(255, 255, 255, 0.42)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)"
    }
  }
}