Examine source code of The Blueprint

{
  "theme": {
    "images": {
      "theme_frame": "BPHeaderpersona.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "The Blueprint",
  "manifest_version": 2,
  "description": "UPDATED APRIL 13!\n\nThe ideal browser backdrop for those who are always thinking, tweaking, designing or dreaming of the next project."
}