Examine source code of Cuir bleu

{
  "theme": {
    "images": {
      "theme_frame": "Cuirbleu1.png"
    },
    "colors": {
      "frame": "#57f0dc",
      "tab_background_text": "#aaeff7"
    }
  },
  "version": "2.0",
  "name": "Cuir bleu",
  "manifest_version": 2
}