Examine source code of filasivinda

{
  "theme": {
    "images": {
      "theme_frame": "firefoxredscreendark.jpg"
    },
    "colors": {
      "frame": "#612626",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "filasivinda",
  "manifest_version": 2,
  "description": "Red and black. A deep red fabric texture woven with black. Shades of dark red."
}