Thought some of the folks who visit here might be interested in a Knytt Stories level I made over the last 6 days. Download link and further information can be found at the thread on Nifflas' Support Forum.
Nice. Dawn of the 7th day was my fastest time.
The night graphics do NOT have enough contrast.
As far as I know that's the fastest time possible.
Do you think contrast is a big issue? I was aiming for just-barely-enough-contrast, but I'm inclined to agree with your complaint and have been working on modifications. Are you playing the game fullscreen?
I was playing windowed over the Nifflas forum. I think the gradient is more the issue. The contrast is fine at the bottom, but not the top:
A couple random colors from the terrain: RGB(5, 2, 6), RGB(9, 3, 10).
Bottom of the sky: RGB(25, 33, 30)
Top of the sky: RGB(10, 10, 10)
The terrain and the top of the sky almost match up, really (save for green, but that's hardly noticeable).
Drop this into my level's Gradients folder and tell me what you think. The only monitors I have access to at the moment are terrible for colour depth or any sort of subtle gradation, so I really can't tell myself.
It's much better. I can actually see my way across that overhang now.