Examine source code of Emerson Black & Grey

{
  "theme": {
    "images": {
      "theme_frame": "Persona_Header_01.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#262626"
    }
  },
  "version": "2.0",
  "name": "Emerson Black & Grey",
  "manifest_version": 2,
  "description": "This is my first persona, i make it because i like clean and modern styles, and i dont find one styles who i liked in Personas Site. Best fit in 1280x800 px. Enjoy!"
}