WindowBlinds 5 is now available at Download.com WindowBlinds 5 WindowBlinds 5 supports per-pixel alpha blending allowing for "glass" effects, semi-transparent titlebars/borders, smooth borders. Version 5 adds per-pixel alpha blending. This means that title bars and borders and menus and other GUI elements seamlessly blend in to what is around them. Glassy skins, skins with very smooth edges, and irregularly shaped menus and other pieces become possible.