Examine source code of Blue Mat Like Thing

{
  "theme": {
    "images": {
      "theme_frame": "bluemattop.png"
    },
    "colors": {
      "frame": "#4bc4cf",
      "tab_background_text": "#030202"
    }
  },
  "version": "2.0",
  "name": "Blue Mat Like Thing",
  "manifest_version": 2,
  "description": "I know, I know you all think its suckish but I was just really bored, so I just made this.I just thought that it looks like a blue mat..."
}