Bash directories coloring lost in unix when using ls

This might have some to do with the /home/[your-user-name]/.bashrc file.

Check for that file, if it is not existing at all copy it from /etc/skel/.bashrc using

sudo cp /etc/skel/.bashrc /home/[your-user-name]/.

Then do

source /home/[your-user-name]/.bashrc

DO NE!