Examine source code of Step up to the mic

{
  "theme": {
    "images": {
      "theme_frame": "befamous.png"
    },
    "colors": {
      "frame": "#1a5567",
      "tab_background_text": "#029ecc"
    }
  },
  "version": "2.0",
  "name": "Step up to the mic",
  "manifest_version": 2,
  "description": "Microphone. [be] famous"
}