Last one for now. I limit myself to three in a day. ;)
I'd like to request the Infused Wood and Sooty Marble from Astral Sorcery. In particular, I'd like to see the Sooty Marble done with a white overlay, like the soot was chiseled off. I think it's a design style we're a bit short on in MC.
Thank you.

Last one for now. I limit myself to three in a day. ;)

Don't! Just keep in mind that Unlimited Chisel Works is a proof of concept mod that operates on a recoloring algorithm and probably won't be developed much beyond that (as I'm not a big enough Chisel fanboy), so any "custom overlay"-requiring requests, or requests which don't look good when simply recolored/adjusted automatically, will be rejected for the time being. Sorry!

Didn't want to flood your inbox. I'm not seeing any texture files, so I guess this all goes on in-game, which limits some of my requests (like the dawnstone block) unless they have a blank version available elsewhere (like the caminite). That about right?

Didn't want to flood your inbox.

Don't worry, my inbox can handle as many feature requests as you want.

For the future, try opening one issue and using GitHub's checkboxes.

I'm not seeing any texture files, so I guess this all goes on in-game

Yes.

which limits some of my requests (like the dawnstone block) unless they have a blank version available elsewhere (like the caminite). That about right?

Not really. Essentially, if you can see me taking a paint bucket and splashing it over a vanilla block to get that block, it can probably get in. If not, it probably won't (for now).