Examine source code of Argaive for FF4

{
  "theme": {
    "images": {
      "theme_frame": "header2.png"
    },
    "colors": {
      "frame": "#900000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Argaive for FF4",
  "manifest_version": 2,
  "description": "Persona for FireFox 4, complete with screen calibration strip at the bottom. Differs from FF3 version by placement of small logo on footer."
}