Examine source code of Yoshi Browser

{
  "theme": {
    "images": {
      "theme_frame": "yoshibrowser.jpg"
    },
    "colors": {
      "frame": "#02ab1b",
      "tab_background_text": "#e62222"
    }
  },
  "version": "2.0",
  "name": "Yoshi Browser",
  "manifest_version": 2,
  "description": "I made this browser because I am a huge fan of yoshi. This is my first one, so bear with me! Thanks!"
}