Examine source code of blueNight

{
  "theme": {
    "images": {
      "theme_frame": "personas_b2r_header-blueNight.png"
    },
    "colors": {
      "frame": "#eff7ff",
      "tab_background_text": "#eff7ff"
    }
  },
  "version": "2.0",
  "name": "blueNight",
  "manifest_version": 2
}