I have some questions about this topic below. It’s both General and Suggestion topic at the same time.
https://forum.playboundless.com/t/introducing-the-elements-of-boundless-updated/4366?u=darthnott
Dark worlds: Will there be dark worlds where all materials are black or very dark? The dark element is what I am most looking forward to. And are those dark planets full of dangerous creatures, or rather desolate and abandoned because no life can exist? Would love both variants. A dark planet will be my main base. That’s what my name says. 
The colors in Boundless: I’d like to have a full color palette, for every material many different colors. That would be cool to have many colors and not just a few standard. More creativity of building in Boundless. It’s called boundless and it hopefully is boundless in this topic. 
Have you already got a plan how many colors there will be per material?
Black gleam: I know black gleam can not really glow because it is black, but it can have a small (white or black) glow around it. I would find it cool if there is something planned for black gleam.
Maybe these topics are secret and you can not answer them, but I wanted to ask it anyway.
May the force be with you 
