"scott" <sco### [at] scottcom> wrote:
> [...] you would have to use a negative somewhere because
> monochromatic light sources are outside of most colour spaces.

Values for RGB are about responses to light in three frequency ranges.
You can't have negative responses.

What you're looking for falls in the 'frequency' gamut problem (see above), and
demands a spectral approach (see above), which is beyond the capabilities of
POV-Ray.

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