Examine source code of Retro Chic

{
  "theme": {
    "images": {
      "theme_frame": "RetroChicHeader-Updated.jpg"
    },
    "colors": {
      "frame": "#757373",
      "tab_background_text": "#1c1b1b"
    }
  },
  "version": "2.0",
  "name": "Retro Chic",
  "manifest_version": 2,
  "description": "This design features a manipulation of an Alberto Vargas painting of a woman named Olive Thomas in 1920.  Vargas girl paintings and illustrations have experienced a resurgence of popularity over the last two decades but this is the only painting of one, to my knowledge, which is in the Public Domain.  Enjoy!\n\nSearch Tags: woman, girl, art, pinup, pin-up, pin up, fashion, chic, retro, rose. "
}