Examine source code of Flower Impresion

{
  "name": "Flower Impresion",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "flower-1.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(56, 115, 139, 0.7)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(129, 69, 102, 1)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(236, 92, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f8f8d6df-2f7a-4666-829f-e2db9249eec0}"
    }
  }
}