Examine source code of OnGoldenPond

{
  "name": "OnGoldenPond",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "OnGoldenPond.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(10, 80, 10, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{08b24960-9ffa-4e00-8b0e-990e592733d0}"
    }
  }
}