Examine source code of Chess v.1

{
  "theme": {
    "images": {
      "theme_frame": "Chesshead.jpg"
    },
    "colors": {
      "frame": "#808080",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Chess v.1",
  "manifest_version": 2,
  "description": "I wanted to make somthing that has to do with chess at the end I finished this one."
}