Webclient: influence CSS files

Hi,

I'm trying to influence the CSS files of the webclient (to change the colours and stuff like that).

I found the CSS-files locations defined in transaction CRMS_IC_SYSTEM_PROPS:

/sap/bc/bsp/sap/crm_ic/crm_ic_contextarea.css

Does anybody know which physical location on the server corresponds with this? I would like to place another CSS file in this directory.

Thx in advance,

Michael.