My current project calls for the ability to quickly add dark INSL to an area, but I lack the space needed to do that with DRAY, so I'm looking for a way to accomplish the task with CRAY instead. However, I seem to be unable to get the colour I need with CRAY and FILT alone, since FILT only colours CRAY beams if it's deco layer is completely black.

Is there some way to get a precise colour with CRAY or am I just chasing a dream here?