Bing found the following results
Stardock WindowBlinds: Skin and Theme your Windows Desktop
WindowBlinds | WinCustomize.com
WindowBlinds - Aero 11 (FREE DOWNLOAD) | WinCustomize.com
eXperience11 (Stardock Windowblinds Theme) - DeviantArt
Stardock WindowBlinds: Skin and Theme your Windows Desktop
Stardock SkinStudio: Skin and Theme your Windows Desktop
You Can Now Customize Windows 11's Look With WindowBlinds - How-To Geek
WindowBlinds lets you easily skin and customize Windows 10
WindowBlinds 11 on Steam
WindowBlinds review: Make Windows 11 (almost) look like …