MediterraneanNight: Adjust the colors of tabs of the terminal.

The colors are still not as nice as I wished, but, at least, it is usable
and non-intrusive to my eyes.

Signed-off-by: Rogério Brito <rbrito@ime.usp.br>
MediterraneanNight: Fix (some) whitespace madness.

Signed-off-by: Rogério Brito <rbrito@ime.usp.br>