Some can be created at home without any special equipment. For example, you can't mix red and green and create a "redgreen," but if you cross your eyes and have one eye see red and the other see green, you might see a new color you haven't seen before.
I also see weird colors in displays with a high frame rate that cycle between colors quickly. And at one point, I had a laser shot in my eye, which destroyed part of my vision. Initially, in that spot, I saw a weird iridescent silver-greenish color I had never seen before. Although that was pretty cool, I wouldn't recommend repeating this involuntary experiment just to see that color.
I tried really hard to see the "redgreen", but it just felt like an occlusion bug when two 3d objects have the exact same z layer and fight to render on top of the other.
I see it but it doesn't really feel like a new color? It just looks like blue on top of black. Maybe a new intensity, if I was being super generous, but not a new color.
I think it qualifies as a new color. If we can't differentiate colors on saturation, hue or intensity then I don't know how there are supposed to be multiple colors at all. It seems like fair play by the scientists, if a bit shrewd in defining "new".
To me, Stygian blue doesn't look like blue on top of black. It looks like black that glows blue, which doesn't make sense in the real world. I think it is fairly described as a new color—I would be quite unsettled if I encountered it in real life.
Of course, colors are a hallucination our brain produces, so perhaps different brains deal differently with an unusual experience like Stygian blue.
> I think it is fairly described as a new color—I would be quite unsettled if I encountered it in real life.
I don't feel this follows. There are a lot of things that would unsettle me if I saw them, like if someone gave off a visible aura. Heck, I even found a "black flame" a bit unsettling, and I saw a literal video of it on YouTube (look it up if you don't know what I'm referring to). I'd feel similarly if I saw a transparent human too. The feeling you get - or the fact that you haven't seen something visually similar before - doesn't really imply it's a new color, I think!
I get more of a black in the middle and blue glow around the edges. Also not sure it qualifies as a new color. To me, it's more like an interesting illusion that combines black and blue.
wait, crossing eyes to see color is a totally different thing than having pointing the receptor right ?
The one in OP's article is a new weird signal that got sent to the brain, the other is the brain itself mixing 2 known signals.
Some can be created at home without any special equipment. For example, you can't mix red and green and create a "redgreen," but if you cross your eyes and have one eye see red and the other see green, you might see a new color you haven't seen before.
I also see weird colors in displays with a high frame rate that cycle between colors quickly. And at one point, I had a laser shot in my eye, which destroyed part of my vision. Initially, in that spot, I saw a weird iridescent silver-greenish color I had never seen before. Although that was pretty cool, I wouldn't recommend repeating this involuntary experiment just to see that color.