Examine source code of Saitenfeuer

{
  "theme": {
    "images": {
      "theme_frame": "saitenfeuerding.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#1c0b0b"
    }
  },
  "version": "2.0",
  "name": "Saitenfeuer",
  "manifest_version": 2,
  "description": "Saitenfeuer aus Borna! Deutschrock vom aller feinsten!"
}