See (soon to be) attached file -- output of minicom.
In xterm, rxvt and old gnome-terminal. when scrolling you get the expected
white-on-black for new lines.
New gnome-terminal makes the unchanged space on the new lines white, though.
Created attachment 75904 [details]
cat me in gnome-terminal and in xterm. Observe difference.
Fixing in CVS for 0.9.2.