Examine source code of Ironman-shadows

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#31c9fb",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Ironman-shadows",
  "manifest_version": 2,
  "description": "first try at  a theme, just somesimple jarvis"
}