Examine source code of lovely Christmas

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#135427",
      "tab_background_text": "#0aff47"
    }
  },
  "version": "2.0",
  "name": "lovely Christmas",
  "manifest_version": 2,
  "description": "Self-Painted computer image (see my website)"
}