Examine source code of BlueBrickSun

{
  "theme": {
    "images": {
      "theme_frame": "firefoxTop.png"
    },
    "colors": {
      "frame": "#333333",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "BlueBrickSun",
  "manifest_version": 2,
  "description": "This persona matches the desktop background I created for myself in photoshop. I decided to share it."
}