Examine source code of scaredy kittehs

{
  "theme": {
    "images": {
      "theme_frame": "scardeycat.jpg"
    },
    "colors": {
      "frame": "#f5ebeb",
      "tab_background_text": "#f7c245"
    }
  },
  "version": "2.0",
  "name": "scaredy kittehs",
  "manifest_version": 2,
  "description": "orange startled kittehs"
}