I like the comparison between the "design proposal" and finished vessel. I'd previously figured that the TOS Constitution design never existed in the alternate universe (i.e. what we got was this timeline's plan A, based on different design parameters a the project's outset), but after seeing that NCC-0718 hologram in the ID deleted scene and read "old style Constitution-class" somewhere (either one of the Starfleet Academy
novels or a fanfic) I've wondered how both designs might have co-existed somehow.
As for the USS Vengeance, the novel The Return
featured a Defiant-class ship with a similar paint job, described as a layer of "microdiffracted carbon" to absorb visible radiation.