Examine source code of Umbreon Forever

{
  "theme": {
    "images": {
      "theme_frame": "FirefoxPersonaTest2.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Umbreon Forever",
  "manifest_version": 2,
  "description": "First persona I ever made. Just want opinions. Credit to Pokemon for Umbreon and whoever drew the Umbreon Picture used. Sorry if it comes out to big. I don't know what I'm doing, but it works fine for me. (although I did edit it to be smaller)"
}