Examine source code of Cherry blossom 2

{
  "theme": {
    "images": {
      "theme_frame": "Mount_Fuji_seen_throught_cherry_blossomcopy.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#030303"
    }
  },
  "version": "2.0",
  "name": "Cherry blossom 2",
  "manifest_version": 2,
  "description": "Cherry blossom"
}