Examine source code of msn

{
  "name": "frutinha aero",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Capturar.PNG"
    },
    "colors": {
      "frame": "rgba(133, 194, 255, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(173, 211, 240, 1)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(255, 255, 255, 1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(79, 167, 245, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ed88f9be-05f8-42ab-9d5d-77dde5b659aa}"
    }
  }
}