Hey there! Nice work on trying to replicate the Aero effect from Windows Vista/7.
To add an Aero glass effect in WindowBlinds, you can try using a semi-transparent PNG layer combined with a blur effect in your theme settings.
Also, make sure your image layer has some opacity and blur settings adjusted properly to simulate that glassy reflection look.
Keep experimenting, you're on the right track!
If you need more help, feel free to ask