Examine source code of Three King

{
  "theme": {
    "images": {
      "theme_frame": "3King.jpg"
    },
    "colors": {
      "frame": "#37c2ed",
      "tab_background_text": "#37c2ed"
    }
  },
  "version": "2.0",
  "name": "Three King",
  "manifest_version": 2,
  "description": "Homage to three king : Blues,Rock,Pop"
}