Examine source code of Yash Ar

{
  "theme": {
    "images": {
      "theme_frame": "topfirefoxsunset.jpg"
    },
    "colors": {
      "frame": "#b6c99d",
      "tab_background_text": "#e7faa3"
    }
  },
  "version": "2.0",
  "name": "Yash Ar",
  "manifest_version": 2,
  "description": "Ottawa River in Canada, Catching the last minutes of the day!"
}