Examine source code of Tanz der Vampire

{
  "theme": {
    "images": {
      "theme_frame": "Persona_Header_LABS.jpg"
    },
    "colors": {
      "frame": "#b01c1c",
      "tab_background_text": "#731313"
    }
  },
  "version": "2.0",
  "name": "Tanz der Vampire",
  "manifest_version": 2,
  "description": "I made it for my sis :/"
}