Examine source code of Flower tile.

{
  "theme": {
    "images": {
      "theme_frame": "a826--hanawappen-cha-sorary4567--a.jpg"
    },
    "colors": {
      "frame": "#dbd7e0",
      "tab_background_text": "#f5f2f2"
    }
  },
  "version": "2.0",
  "name": "Flower tile.",
  "manifest_version": 2,
  "description": "。。。花タイル。。。\n\n\n\n\n\n\n\na826--hanawappen-cha-sorary4567--a"
}