Examine source code of Your Firefox

{
  "theme": {
    "images": {
      "theme_frame": "mipersona_header.jpg"
    },
    "colors": {
      "frame": "#a0afb8",
      "tab_background_text": "#0d0d0d"
    }
  },
  "version": "2.0",
  "name": "Your Firefox",
  "manifest_version": 2,
  "description": "That minimaliste style is a great armonic design for firefox"
}