Different spectrums?

[Psittac]

I was curious to see what the different spectrums do in keeping corals.

I got into planted tanks a bit and know that the red yellow and white all do something different in plants.

I have seen some pictures on here that look to be photoshopped but people say they are under pure blue lighting. How will that affect the corals?

Also what would say a 10k or 12k light do without blue?

Is blue lighting from LED fixtures considered atinic?

In the future i'm going to need another LED fixture and I have the possibility of getting a pure blue fixture for my pico tank. I'm keeping LPS in the tank and the light is a little more blue then white. When I bring home a coral the color difference from the store to my tank is unbelievable.