生成された画像：

A minimalist icon for a Chrome extension called ‘Favicon Stealer,’ featuring a simple, slightly transparent folder outline with one bold, brightly colored favicon symbol inside. The favicon is the focal point, with the folder subtly blending into the background using transparency. The design is clean, modern, and sleek, ensuring the favicon is the prominent visual element. The background is minimal and slightly transparent to give the icon a floating, lightweight appearance, perfect for small sizes.