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You mean the purple color light physically changes the color of the plant? I didn't know that. I tried googling and can't find examples. Can you provide some evidence? It seems hard to believe.

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I suspect the OP means, or at least the way I parsed it, is that they'll adjust to the changes to their lighting conditions, not that the light materially affects their physical coloration.

i.e. when someone buys them, they'll have to adjust to natural (i.e. sun) light, rather than the artificial growth lighting.

That isn't hard to believe at all, plants are light abdorbers and the type of light they absorb effects their genetic expression.

If it was true it would be easy to find photographic evidence online. The fact no one in this thread can provide any evidence makes me think this is a rubbish claim.

that's a big assumption, seems like you'd need to find a paper that did an experiment that compared color temps of lights effects on plant leaf color or do some analysis of levels of pigments present in leaves.

Yes, I'd like to see that. I did spend about 15 minutes googling for any evidence similar to this and came up completely empty-handed.

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