Examine source code of Fox Me

{
  "theme": {
    "images": {
      "theme_frame": "Persona_Header_86k.png"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#6b7578"
    }
  },
  "version": "2.0",
  "name": "Fox Me",
  "manifest_version": 2,
  "description": "Another Firefox's Persona inspired on the What's new page. \nEasy to eyes, fast and combines a minimalistic style with grudge in soft way."
}