Examine source code of ElectricSteelers

{
  "theme": {
    "images": {
      "theme_frame": "Abstract_wallpaper_2_by_ganoderma_crop_crop.jpg"
    },
    "colors": {
      "frame": "#ff0000",
      "tab_background_text": "#e6cf00"
    }
  },
  "version": "2.0",
  "name": "ElectricSteelers",
  "manifest_version": 2,
  "description": "Go Steelers!"
}