Examine source code of Bring Back Christmas

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#b00a0a",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Bring Back Christmas",
  "manifest_version": 2,
  "description": "It is an attempt to remind the world about the real meaning of Christmas. Please spread the message\nGive glory to God"
}