Examine source code of Only-hit Grau

{
  "theme": {
    "images": {
      "theme_frame": "herder.png"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Only-hit Grau",
  "manifest_version": 2,
  "description": "Das ist ein einfaches grau  passend zum design von <a href=\"https://outgoing.prod.mozaws.net/v1/a8c6547d3d888c2a5ae21ba645ab769c376728ed6568b40b363084e88aaab949/http%3A//only-hit.de.tl\" rel=\"nofollow\">only-hit.de.tl</a>"
}