The terminal default was changed in RHEL 10 from white-on-dark (dark mode) to black-on-white (light mode). This should be reversed and the default terminal style should return to dark mode. 

This is a user experience regression for the RHEL10 desktop.

A change in default behavior is an issue for any existing terminal applications that may be running by customers. An unexpected change to the background color of the terminal was logged in 7.2 and was fixed in order to maintain the user expectation: https://bugzilla.redhat.com/show_bug.cgi?id=1264054  

"Light mode" is also undesirable for our target users, with Red Hat users overwhelmingly indicating a preference for dark mode as per Patternfly research. (Here are some related customer feedback tickets around dark mode: CRCFEEDBK-4742, CRCFEEDBK-4731)

This has been fixed in Fedora:
"Ptyxis was imported into RHEL 10 while it was going through package review in Fedora, and then the dark mode override was added to Fedora a month later." - Debarshi Ray

At Summit, a customer complained about this default change to the user experience team. This was the same day RHEL 10 was GA, so we can assume that there are more unlogged complaints as this one was exposed very quickly.