Unable To Print In Black And White From Firefox

As it says in the title. I recently switched to Firefox, but now, every time I try to print from the browser, it forces the selection to be color printing instead of B/W. * In the Firefox dialog, the option to change the setting is greyed out (see attached image). * Switching to the system dialog (with either about:config or with the clickable link in the Firefox dialog) does NOT help-- I can change the setting, but hitting the "print" button causes the setting to revert and display an error message (see attached image). * I have tried updating the drivers for the associated printer, both through an update and completely disconnecting/reconnecting the printer, but the issue did NOT resolve. * Chrome and Edge both print black and white to this same printer without issue. The printer has enough black ink. This definitely seems to be a Firefox issue, not a printer one. Some threads discuss resolving a similar issue with the use of print.cups.monochrome.extra_settings, but I can't seem to find the relevant printer information to make this work. I do need to be able to switch between color and B/W printing frequently, so locking the printer to B/W only isn't a viable option. If anyone has any insight about this, it would be greatly appreciated!