which 7?
Try the seven of the raindow, or get a 64 pack of crayons.
when i paint, i only need 3 colors of pigment, not 7.
Can you make white or black from those three? Nah, didn't think so.
7 bands of visible light is arbitrary. you chose 7 because you wanted to see 7. maybe i like the number 16. i can just as easily break up visible light into 16 bands and give them all names. that's all.
Actually the seven represent the spectum which forms the visible white light, and also reflects the basic 7 waves of the electromagnetic spectrum. Think it has something to do with the duality of light photons which are massless yet behave as a particle and a wave.
i don't know. is color spirit? wavelength? i don't think it is.
Might be it is a fragment of light, or rod, that reflects the the visible light relative to its wave length, which is not to be confused with colored matter that is produced by the tint which too reflects the visible light based upon certain factors of the tint.
So exactly what is the physical composition of the 'Spirit' Seems that one would have to know what a 'Spirit' is in order to to definitively dismiss something as untrue.
the numerological significance of 7 as "perfect" and/or "complete" is more palatable to me than tint.