Examine source code of Gradient Persona

{
  "theme": {
    "images": {
      "theme_frame": "Personastop.png"
    },
    "colors": {
      "frame": "#737373",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Gradient Persona",
  "manifest_version": 2,
  "description": "It's my first, so therefore, it's not so good.. :/ But if you like, get it."
}