am looking for a lesson in gear knobs!

I am looking for an RS6 gear knob RHD like the picture in the following thread.

Got some new goodies today [updated with new pics]

My steering wheel is a grey colour - sort of AUDI standard colour and wanted to know if this is classes as black soul colour. Does anyone have a part number that I could use to check that I order the right one.

Thanks for your advice