Examine source code of Shooting Star Dragon

{
  "theme": {
    "images": {
      "theme_frame": "Yusei_fudo_by_naruble.JPG"
    },
    "colors": {
      "frame": "#3d21db",
      "tab_background_text": "#289c0e"
    }
  },
  "version": "2.0",
  "name": "Shooting Star Dragon",
  "manifest_version": 2,
  "description": "I'm just doing this for fun, though this is my first attempt and all so I don't inspect this to be perfect"
}