Examine source code of Hammer and Sickle

{
  "theme": {
    "images": {
      "theme_frame": "hammersicklefirefoxpersonasheader.jpg"
    },
    "colors": {
      "frame": "#ffe5e5",
      "tab_background_text": "#ffb300"
    }
  },
  "version": "2.0",
  "name": "Hammer and Sickle",
  "manifest_version": 2,
  "description": "For those who are still living in CCCP"
}