Examine source code of Sakura Swirls

{
  "theme": {
    "images": {
      "theme_frame": "sakura.jpg"
    },
    "colors": {
      "frame": "#ff85c4",
      "tab_background_text": "#300000"
    }
  },
  "version": "2.0",
  "name": "Sakura Swirls",
  "manifest_version": 2,
  "description": "Sakura (cherry blossoms) in bloom."
}