I don't use the green pen, I follow the regular flow.
* Your post is interesting; more scientific evidence is needed to optimize the compact disc (materials, coloring, stamped label, etc.).
The LP is going through a new process to improve its sound quality; I believe the CD is in dire straits as well, as we know it.
Most speaker's enclosures are made of MDF. I think it's a flaw, and some speaker manufacturers have noticed it.
I agree with you that we can hear the MDF's "echo chamber", and it's not natural in the tree of life...
_______
If scientific evidence was presented to me regarding what you just said about the "flat black marker", I would start a business right away and get a patent in order to get better sound. ...Not for the money, not for the company, not for the workers and investors, just for everyone to be happier with a better sound from the compact disc in the year 2016 and beyond.
Then, why start a business with a patent? Because it's the North American way. ...Free enterprising, free trade, free oil, free people...in a material world...Madonna.
There is some humor on what I've just said above. But nonetheless your post is interesting of pursuing a new direction. ...No more MDF and better laser capability from better materials and stamping and coloring of our CDs. In Germany they know some and they act upon; some of their CDs you can see the care they apply.
Also, top grade CD-R/RW are much better to record music with higher quality sound from their superior build with more layers.
Mass market CDs are for only one thing; financial profits.
_______
In Japan they have the Crystal discs. They cost more though, much more.
Today we have Blu-ray Pure Audio discs, with high-res stereo and multichannel audio tracks. Should we paint them too with black/green/purple markers? About SACDs?
Those are legit facts and questions. We're here to discover the BEST alternatives in order to get the BEST sound quality.
We have no business to espouse and restrict ourselves with the lesser products of inferior quality sound, including the medium and the source of its making and music recording engineers.
Here's what I think: Our CDs that we can see through, just buy dark CD labels and stick them to them. The laser is going to track better and less berserk in its music rendition...less erratic. What you think? Makes sense?