CCZE is a robust and modular log colorizer with plugins for apm, exim, fetchmail, httpd, postfix, procmail, squid, syslog, ulogd, vsftpd, xferlog, and more.

For installation

sudo yum install ccze

and to use it:

tail -f -n 50 /var/log/firewalld | ccze
#or better yet
cat  /var/log/firewalld | ccze|more

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