Unnsee, it's clear that you are really enjoying your new machine and I'm sure that you will find it a great platform for Java development.
However, this forum is not a general Mac help form -- it is intended to be a forum for discussing Mac OS X as it relates to Java. For general Mac question such as this one, I'm going to request that you visit some of the myriad other Mac forums on the web. One that I use frequently is http://www.macosx.com/forums/.
thanks, bear Forum bartender
P.S. The colors can be set in the Terminal Preferences.