Examine source code of M82 Starburst

{
  "theme": {
    "images": {
      "theme_frame": "m82_header.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "M82 Starburst",
  "manifest_version": 2,
  "description": "M82, the Starburst Galaxy.\n\nImage credit: Mark Westmoquette (University College London), Jay Gallagher (University of Wisconsin-Madison), Linda Smith (University College London), WIYN/NSF, NASA/ESA"
}