Dark or Bright leaves about lighting

That's going to depend upon the plant.

In phalaenopsis, for example, dark green can be better, as too much light can reduce flowering.

 

Really? I did not know that, but it explains a lot. I shall have to rethink how I grow my rescue phalaenopsis.

 

Carl, I used to think that light=energy, so the greater (short of burning) the better, but I have since learned that it ain't always true.

The best phals I have ever seen were grown in a greenhouse with an interior that was totally covered with a thick layer of algae - so much that it took a couple of minutes for your eyes to adjust when entering.

Since moving my few phals out of a greenhouse in PA and onto a deck in NC that is on the shady north side of the house (and in the adjacent windows for the winter), they have never bloomed better.

 

And this is why I joined this list. Thanks for the info.