I e-mailed Denso and they replied stating that the color of the ADBV does not matter and their filters have silicone ADBV's.
I emailed Denso several months ago about this and was also told they’re using silicone ADBV.
I can’t remember who, but there’s a board member that has something fierce against Denso (or so it seems) that I’ve gone rounds with on this issue more than once which led to the email.
The last Denso I cut open had one of the most pliable ADBVs I’ve encountered yet. I have another one in the garage waiting to be cut open, should get to it this weekend.