Examine source code of Liberte dexpression.

{
  "theme": {
    "images": {
      "theme_frame": "firefox_head.jpg"
    },
    "colors": {
      "frame": "#db4c7c",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Liberte dexpression.",
  "manifest_version": 2
}