Examine source code of TheBlues

{
  "theme": {
    "images": {
      "theme_frame": "2560-1600-70068-2.jpg"
    },
    "colors": {
      "frame": "#62ebf5",
      "tab_background_text": "#9596f0"
    }
  },
  "version": "2.0",
  "name": "TheBlues",
  "manifest_version": 2,
  "description": "Stripes in graduating shades of blue"
}