I think they're showing it in the two videos on the page, though it's a bit subtle.
From what I understand, they were struggling to have good color resolution (distinguishable colors) at lower brightnesses. The first video demonstrates that well, especially if you look at red, which seems to be almost the same pale red color throughout the 10 or so LEDs that color occupies.
The second video, I assume, is after the temporal dithering is applied. If you focus on red again, you can see a much more smooth transition from red, to magenta, to blue.
From what I understand, they were struggling to have good color resolution (distinguishable colors) at lower brightnesses. The first video demonstrates that well, especially if you look at red, which seems to be almost the same pale red color throughout the 10 or so LEDs that color occupies.
The second video, I assume, is after the temporal dithering is applied. If you focus on red again, you can see a much more smooth transition from red, to magenta, to blue.