Well... I didn't find anything for this wonderfull dock holder (that is so lightweight with ram and resources), so I decided to create some themes for it... they are lil' simple, but may be usefull for you, I attach the file...
The installation is very simple, just un-RAR the folders in the themes folder inside RK Launchers main program file, then, just choose the one you like most.
Hope you like them... I don't know if this works for other programs (like Objectdock or similar), but at least for RK does XD.