Examine source code of Insomnia Supelec

{
  "theme": {
    "images": {
      "theme_frame": "banniere_insomnia_bleue.jpg"
    },
    "colors": {
      "frame": "#1f5ad1",
      "tab_background_text": "#4b21ad"
    }
  },
  "version": "2.0",
  "name": "Insomnia Supelec",
  "manifest_version": 2,
  "description": "Insomnia on firefox"
}