Depends on how you've wired it......are the normal sidelight functions still on the original setup, or does your RGB setup deal with side lights too?
If the RGB setup deals with both, simply go to the following lines in the adaptation map, and look for the LICHTFUNCKTION lines on both Leuchte 2SL VLB10 (left headlight unit) and Leuchte 3SL VRB21 (right headlight unit) and set all the functions to not active. The car won't know the lights are there once the
coding is altered, and the bulb error light won't come on.
If the RGB device deals only with the DRLs, and other functions of the original light are retained as normal, just disable the daytime running lamps function (set to not active)
Make sure you screenshot your settings before changing anything in case it doesn't work.
Screenshot of the standard
coding setup on a LED headlight
Hope this helps