Examine source code of CriticalMass white

{
  "theme": {
    "images": {
      "theme_frame": "004.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "CriticalMass white",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/296f081751712fe1b820be6061cf01d98dac6fdf63f13ad0f1d003c0a15142b4/http%3A//www.criticalmass.hu\" rel=\"nofollow\">www.criticalmass.hu</a>"
}