Terminal Bash Profile Doesn't Transfer

Hello all,

I have just updated my macbook pro OS to Catalina. With that, there were a number of changes, including a new terminal (command line) format. I use the command line a lot and had it stylized to my fancy using a .bash_profile file. However, it seems all of these settings were largely discarded after updating my OS - mostly my text colorings and bash prompt. And I have tried re-sourcing the bash_profile to no avail.

I have tried using the terminal preferences GUI to update this, but I just can't get the same amount of control and versatility as the bash file. I would really like to have my previous settings restored.

My question is: is there a fix to this such that my original bash_profile settings can be the standard/default?

Thanks!