Examine source code of Harmonize Yourself

{
  "theme": {
    "images": {
      "theme_frame": "Custom_Persona.jpg"
    },
    "colors": {
      "frame": "#0042e8",
      "tab_background_text": "#0061a6"
    }
  },
  "version": "2.0",
  "name": "Harmonize Yourself",
  "manifest_version": 2,
  "description": "It is a Persona for who want's some harmony...Watch it and relax."
}