Examine source code of Tiger go ROWR

{
  "theme": {
    "images": {
      "theme_frame": "persona.png"
    },
    "colors": {
      "frame": "#8f5f9c",
      "tab_background_text": "#3d054a"
    }
  },
  "version": "2.0",
  "name": "Tiger go ROWR",
  "manifest_version": 2,
  "description": "Image made using GIMP, just a graphic I made and thought would look nice as a persona on my browser so I went ahead and submitted it."
}