the shader effects option
Since the introduction of R14, SliderDock include a new tab in the "dock settings" window.
This tab is the ShaderEffect tab.
Selecting any option besides "none" will activate this feature.
When your mouse enter an icon, SliderDock will now add special effects to your inactive icons.
Those effects are graphic card accelerated so you need directX 9.0 to use them.
In the future, SliderDock might have more effects added.