Why are no "multicoloured" RGB LEDs offered?

We have tested RGBs extensively. The light produced, especially the white, which is probably mainly used, looks very unnatural or cold and artificial, usually with a blue tinge. You need to know that white light in RGBs is produced by mixing red, green and blue colours. Thus, the colour rendering quality and especially the light output falls far behind that of single-colour LEDs.

The fact that white light within an RGB chip is generated from the primary colours red, green and blue leads to another disadvantage. An RGB chip can only reproduce one light colour at a time. Example: White light for main lighting and a slowly appearing reddish light for a sunset are not possible. With RGB, all the light would turn red...from white to pink to red. With single-colour LEDs, you can have red, blue or white LED bars shine as you like, simultaneously or overlapping at different times.