Made a simple app to add a drop shadow to your taskbar. One .exe for a taskbar on the bottom, and one for the taskbar on top. Use whichever you need...
No installation, just copy to your %Program Files% folder. And run whichever .exe you need.
-Adjustable opacity (darkness)
-Option to run at startup
Other than the ability to right click the shadow, it is non intrusive and doesn't show anything in the system tray.
Right click the shadow to choose preferences or to close it.
There may be a very slight chance that this won't work for your setup. Therefore, no support is given for this program.