Examine source code of Steamer

{
  "theme": {
    "images": {
      "theme_frame": "train.jpg"
    },
    "colors": {
      "frame": "#ed0e0e",
      "tab_background_text": "#e6e3e3"
    }
  },
  "version": "2.0",
  "name": "Steamer",
  "manifest_version": 2,
  "description": "Southern Pacific Locomotive 2479 dressed for memorial day."
}