Examine source code of Light Room by M♥Donna

{
  "name": "Liight Room by M♥Donna",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Liight Room.jpg"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(189, 195, 255, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "bookmark_text": "rgba(95, 105, 250, 1)",
      "toolbar_field": "rgba(3, 3, 3, 0.06)",
      "toolbar_field_text": "rgba(189, 195, 255, 1)",
      "tab_line": "rgba(140, 148, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2e11ebc9-6c24-48a0-8176-0dee9614bfb4}"
    }
  }
}