Examine source code of Sierra Herd

{
  "theme": {
    "images": {
      "theme_frame": "personah_5887.jpg"
    },
    "colors": {
      "frame": "#f5f0e7",
      "tab_background_text": "#f4f5ed"
    }
  },
  "version": "2.0",
  "name": "Sierra Herd",
  "manifest_version": 2,
  "description": "Wild horses in the Eastern Sierra. This is just a test to see how headers and footers look, image placement, text colors, etc."
}