Using the grc app on Linux (Debian / Ubuntu) you can easily colorize your shell environment. This will work for Bash or ZShell.
Colorization of cli application output:
apt install grc
nmap -v -sS 192.168.0.1
This makes output of cli commands easier to read.
Set the above nmap command to always colorize by editing your .bashrc:
alias nmap="grc nmap"
You can do the same thing for other commands from the shell or installed apps.