Examine source code of Russian Gerb

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#0f0f0f",
      "tab_background_text": "#ebebeb"
    }
  },
  "version": "2.0",
  "name": "Russian Gerb",
  "manifest_version": 2,
  "description": "State emblem of the Russian Federation is an official state symbol of the Russian Federation; one of the major state symbols of Russia, along with the State flag of the Russian Federation and the national anthem."
}