Examine source code of Desert Anomaly

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#e6a555",
      "tab_background_text": "#4a0c0c"
    }
  },
  "version": "2.0",
  "name": "Desert Anomaly",
  "manifest_version": 2,
  "description": "A desert nomad comes across 3 pyramids made of crystal gold glass."
}