For some reason, every theme I palette I've had installed for the OS X Terminal.app has reverted to using the default ANSI colours. The themes have been working fine up until this point and I can't seem to determine what could have caused them to revert in this way. For reference, my standard Solarized Dark colour scheme should look like this …
… but it currently looks like this:
A quick look in the preferences panel shows that all the colours are correct save for the ANSI colours which have reverted to their defaults.
I don't know what other information would be helpful but if you need any other info to help me troubleshoot just ask and I'll update as quickly as I can.