With Taskbar Color Effects, you can add Color, Background and Shadow Effects to the Windows 7 Taskbar.
Once you run this portable freeware, it will add a Notification Icon to the Taskbar, which will allows you to change and load Settings or exit the application.
Custom Colors with Transparency
Custom Images with Transparency
Shadow with Transparency
Location aware for Taskbar and adjusts colors, background images and shadow
The application uses embedded images which are sized within the application then extracted to be used as the Shadow.
You can also create your own images, shadows and effects. To create your own Shadow, sccording to where your Taskbar is located you can replace the following images: bottom.png, top.png, left.png and right.png.