ya, it changed... not sure why.
Which Qubes system version are you on, and also the version of the one you refer to into the past, if you remember?
Qubes 3.2. dom0 terminal is blue (or was until Qubes 4 RC-2 was released at least, as that was when I moved away from 3.2 and never looked back).
Qubes 4.0 has a gray dom0 terminal.
I never used Qubes previous to version 3.2, maybe it was gray before 3.2, and became gray once more in Qubes 4.0?
I'm guessing you're using Qubes 3.2. currently, or earlier, if you rarely use the dom0 terminal to the extent you refer to. Because currently Qubes 4 requires you to update dom0 through the dom0 terminal, including handling the backup-create and backup-restore in the dom0 terminal. I suspect a GUI might come in the future though, when more developer time can be focused on it, as they're quite busy with Qubes 4. But this is just speculation on my part.
oh thats good to know. I preferred the grey.
Yes correct I am on 3.2. I thought someone had me swallow the blue pill ;)
I don't mind terminal at all, it is just that after setting all my 18 VMs, I did not have a use.
I use it mainly as a personal cloud (Atlassian stack hosting) + firewall, so this may explain.