Examine source code of Sonic the Hedgehog Theme

{
  "theme": {
    "images": {
      "theme_frame": "header2.png"
    },
    "colors": {
      "frame": "#c7c1c1",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Sonic the Hedgehog Theme",
  "manifest_version": 2,
  "description": "This theme contains a header image with the iconic \"Thumb's Up\" Sonic the Hedgehog figure placed against a dark blue gradient background with lines of light streaking across. The footer contains a repeating image reminiscent of Green Hill Zone from Sonic the Hedgehog 1 on the Sega Genesis."
}