Examine source code of Polish Firefighters

{
  "theme": {
    "images": {
      "theme_frame": "2_MOTYW_FIREFOX_ROBOCZY_firefighters.jpg"
    },
    "colors": {
      "frame": "#f0b0af",
      "tab_background_text": "#fab300"
    }
  },
  "version": "2.0",
  "name": "Polish Firefighters",
  "manifest_version": 2,
  "description": "Polish firefighters in action. Our hero! Respect forever!"
}