Examine source code of Cerulean Forest

{
  "theme": {
    "images": {
      "theme_frame": "Banner9.jpg"
    },
    "colors": {
      "frame": "#2f7369",
      "tab_background_text": "#f7fcfb"
    }
  },
  "version": "2.0",
  "name": "Cerulean Forest",
  "manifest_version": 2,
  "description": "Dreamy treetops in an enchanting forest with shades of emerald and blue."
}