Examine source code of Black Hole Spirals

{
  "theme": {
    "images": {
      "theme_frame": "BlackHole_Abstract_head.jpg"
    },
    "colors": {
      "frame": "#3538f2",
      "tab_background_text": "#fcfcfc"
    }
  },
  "version": "2.0",
  "name": "Black Hole Spirals",
  "manifest_version": 2,
  "description": "Black holes in space spiral out of control leaving blue neon nautilus shaped artifacts. Dark background and soft light display provide great contrast and usability for this astronomy abstract."
}