Finally got a chance to put my hands on the color chips.
As I anticipated they are very dark (and I totally love them). I will be updating the mockups and reduce the blue tint a bit.
The color bit that looks black is actually very dark gray, unfortunately my ****ty cam wasn't able to calibrate properly. This is a try on white background
Here the turquoise and yellow came out pretty well.
The end result will be a dark gray keyboard with a blue accent. I could pick more bluish dark grays, but honestly I prefer it "moon-less" sky.
The GITD on the other hand... REALLY glows!