Examine source code of Aurora Blue Circuit

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#88c0db",
      "tab_background_text": "#173c4f"
    }
  },
  "version": "2.0",
  "name": "Aurora Blue Circuit",
  "manifest_version": 2,
  "description": "Blue PCB circuit board theme.  Futuristic but simple.  And as all of my themes will be, the color blue is featured.  ;)"
}