Examine source code of Brown feather

{
  "theme": {
    "images": {
      "theme_frame": "bob.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#feffb2"
    }
  },
  "version": "2.0",
  "name": "Brown feather",
  "manifest_version": 2,
  "description": "Nice feather done in photoshop"
}