background color grey, lines with leading space

Hi all,

my current slrn version pre1.0.0-18
does take a grey background color within the terminal as default.
(MacOS 10.6 Snow Leopard)

Whenever a text line within a message does begin with blanks, the 
background here does change to white instead.

Maybe this is due to some color definition, although I do not know which 
one it would be and why it does use grey at all.

Example:

color article           "black"         "white"


But the more annoying problem is: the white patches of the leading 
spaces do remain even after its message is gone. It does stick until it 
will be overwritten by some other characters.

Is this some kind of ncurses flaw? Is it due to some broken xterm-color 
setup?

Thans for any suggestions,
Martin

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