Examine source code of Green Yellow Blue

{
  "theme": {
    "images": {
      "theme_frame": "testpersona2.png"
    },
    "colors": {
      "frame": "#faf9d0",
      "tab_background_text": "#090487"
    }
  },
  "version": "2.0",
  "name": "Green Yellow Blue",
  "manifest_version": 2,
  "description": "Very simple customization with a green gradient, blue text and yellow window bar background."
}