Linuxcare: Dear Lina: Colorizing ls

[ Thanks to Linuxcare for this link.

“Dear Lina:
I have recently discovered that I can get a colorized directory
listing with the command ls –color. However, I can’t figure out
how to change the default colors. Can you help me?…

“Dear Lina:
I am using RedHat Linux to connect to the Internet. However, my
hostname is localhost.localdomain. Can I change this without
messing up my connection?…”