Examine source code of Argaive for FF3

{
  "theme": {
    "images": {
      "theme_frame": "header2.png"
    },
    "colors": {
      "frame": "#900000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Argaive for FF3",
  "manifest_version": 2,
  "description": "Persona for Firefox 3, simple yet complete with screen calibration bar. Differs from persona for FF4 by placement of small logo so as to not interfere with status messages.\n\nEnjoy!"
}