Examine source code of BlackLight Grunge

{
  "theme": {
    "images": {
      "theme_frame": "Blacklight-Grunge-Persona-Header.jpg"
    },
    "colors": {
      "frame": "#8a0f0f",
      "tab_background_text": "#311c3b"
    }
  },
  "version": "2.0",
  "name": "BlackLight Grunge",
  "manifest_version": 2,
  "description": "my first one, using one of my school projects as a basis for the design, pretty standard, nothing special"
}