Examine source code of istanbulnight

{
  "theme": {
    "images": {
      "theme_frame": "istanbulnightjpg.jpg"
    },
    "colors": {
      "frame": "#faf7d2",
      "tab_background_text": "#f1f2e6"
    }
  },
  "version": "2.0",
  "name": "istanbulnight",
  "manifest_version": 2,
  "description": "ISTANBUL Night"
}