Examine source code of banana joy

{
  "name": "banana joy",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "bananas vietnam.jpg"
    },
    "colors": {
      "frame": "rgba(237, 199, 61, 1)",
      "tab_background_text": "rgba(63, 242, 161, 1)",
      "toolbar": "rgba(201, 230, 120, 1)",
      "bookmark_text": "rgba(80, 115, 33, 1)",
      "toolbar_field": "rgba(237, 212, 86, 1)",
      "toolbar_field_text": "rgba(20, 120, 9, 1)",
      "tab_line": "rgba(240, 170, 29, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d0c00b4b-c05f-4ab8-8d55-9139814651c5}"
    }
  }
}