Examine source code of Firefox Moon Glow

{
  "theme": {
    "images": {
      "theme_frame": "MoonFireFox_edited-1.jpg"
    },
    "colors": {
      "frame": "#960ce6",
      "tab_background_text": "#2af7f4"
    }
  },
  "version": "2.0",
  "name": "Firefox Moon Glow",
  "manifest_version": 2,
  "description": "Firefox world was replace with a shot of the moon and stylized with glowing edges. Purple, violet hues."
}