Examine source code of Benjamin Karl - Nature

{
  "theme": {
    "images": {
      "theme_frame": "persona_header.jpg"
    },
    "colors": {
      "frame": "#42789e",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Benjamin Karl - Nature",
  "manifest_version": 2,
  "description": "The blue sky and green grass gives you the right chill ;-)"
}