Examine source code of Dark and Blue

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#333333",
      "tab_background_text": "#00adee"
    }
  },
  "version": "2.0",
  "name": "Dark and Blue",
  "manifest_version": 2,
  "description": "FT Deepdark ported to lightweight theme\n\nIf you can't read a tab title, you have too many tabs open."
}