Guake: http://guake.org/
Yakuake: http://kde-apps.org/content/show.php?content=29153
Visor: http://visor.binaryage.com/
SIMBL: http://www.culater.net/software/SIMBL/SIMBL.php
Solarized: http://ethanschoonover.com/solarized
and TerminalColors (http://blog.fallingsnow.net/2009/08/28/fixing-colors-in-term...)
Guake: http://guake.org/
Yakuake: http://kde-apps.org/content/show.php?content=29153
Visor: http://visor.binaryage.com/
SIMBL: http://www.culater.net/software/SIMBL/SIMBL.php
Solarized: http://ethanschoonover.com/solarized