Examine source code of Darkbanana

{
  "theme": {
    "images": {
      "theme_frame": "persona_04.jpg"
    },
    "colors": {
      "frame": "#333333",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Darkbanana",
  "manifest_version": 2,
  "description": "Simple theme made with the use of personal bar in mind : bookmarks in there should be more readable than in some other personas."
}