Examine source code of Cherry Blossom ANIMATED

{
  "theme": {
    "images": {
      "theme_frame": "Blossom-head.png"
    },
    "colors": {
      "frame": "#b3afaf",
      "tab_background_text": "#999494"
    }
  },
  "version": "2.0",
  "name": "Cherry Blossom ANIMATED",
  "manifest_version": 2,
  "description": "Animation of cherry blossom opening. Black and white with silver/grey text.\nAll the best.\nDay."
}