Similar question to http://superuser.com/questions/113804/removing-drop-shadow-from-windows-in-windows-7, but in this case I want to know whether it's possible to customise the drop shadow. I find it too strong, especially on currently focused windows. I'm willing to make changes in registry or use other tools to do so. Specifically, it'd be nice to increase the shadow distance but reduce the strength/opacity.
I is possible, but you need to change windows theme. You can try Soft7 by ap-graphik which is my very favourite. It is almost the same design like original windows 7 theme, but softer and better done. Anyway for your question: right now, there is no way how to do it in registry or in settings.