Examine source code of Abelhas

{
  "name": "Abelhas",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "bg1.jpg"
    },
    "colors": {
      "frame": "rgba(83, 214, 120, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)"
    }
  }
}