Examine source code of Battlestar explosion

{
  "theme": {
    "images": {
      "theme_frame": "battlestar.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Battlestar explosion",
  "manifest_version": 2,
  "description": "Photo L. Bernasconi\nRender by Zetura (<a href=\"https://outgoing.prod.mozaws.net/v1/c2c5ec8a7c14cb220da3f7c2092bf2dc5b6fbfedf817df972cc37af986a446f6/http%3A//renders-graphiques.fr\" rel=\"nofollow\">renders-graphiques.fr</a>)"
}