Examine source code of Bleu vert

{
  "theme": {
    "images": {
      "theme_frame": "Sanstitre123.jpg"
    },
    "colors": {
      "frame": "#00d9ff",
      "tab_background_text": "#6810cc"
    }
  },
  "version": "2.0",
  "name": "Bleu vert",
  "manifest_version": 2,
  "description": "Pour avoir beaucoup de couleur :)"
}