Examine source code of B&W Smoke

{
  "theme": {
    "images": {
      "theme_frame": "Persona_Header.jpg"
    },
    "colors": {
      "frame": "#303030",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "B&W Smoke",
  "manifest_version": 2,
  "description": "just some photographed smoke. Black  and hints of turquoise and rust against white. Simple and clean."
}