colors in /var/log

[Steven Vollom]

I am just learning how to use the terminal.  I wanted to see the health 
of my system, but have never read a /var/log before.  There 31 entries 
that are pink colored, 34 entries that are white, and 3 blue entries.  
Is this just patriotic for me here in the USA, or does red indicate I 
should be concerned, white not concerned and blue, external concerns?  I 
cannot see how seeing this page can tell me the health of my computer, 
unless the colors are the way.  How do I make my computer healthy?

Steven