Examine source code of G4TV 1

{
  "theme": {
    "images": {
      "theme_frame": "01g4_persona.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "G4TV 1",
  "manifest_version": 2,
  "description": "Can't get enough G4? Boy have we got the Firefox Persona for you. Deck out your browser in G4TV's classic orange design."
}