Examine source code of Abstract in Grey

{
  "theme": {
    "images": {
      "theme_frame": "header1.png"
    },
    "colors": {
      "frame": "#565661",
      "tab_background_text": "#24242b"
    }
  },
  "version": "2.0",
  "name": "Abstract in Grey",
  "manifest_version": 2,
  "description": "An abstract doodle chopped and cropped to persona specs."
}