Examine source code of Blue Christmas Background

{
  "theme": {
    "images": {
      "theme_frame": "header118.jpg"
    },
    "colors": {
      "frame": "#d9d5d5",
      "tab_background_text": "#f5abf4"
    }
  },
  "version": "2.0",
  "name": "Blue Christmas Background",
  "manifest_version": 2,
  "description": "Holiday Background."
}