you can clone the reposatory using below in your terminal
cd ~
git clone https://github.com/iNightjar/BashFile.git
let's make a backup from the default files in case something goes wrong
cd ~
mkdir bashFilesBackup
echo ~/bashFilesBackup/ | xargs -n 1 cp -v ~/.bash*
you can replace your default linux .bash files with mine
cd ~/BashFile/
echo ~/ | xargs -n 1 cp -v /.bash*
modify the absolute pathes used inside the .bashrc file according to your preffered settings
Check this repo, I used their themes in my terminal.
You can find all installation and configuration steps in there documentation too.