simple black line from plot?

[Matthias Brennwald]

Dear all,

this may be stupid, but: is there a simple way to plot a black line?

With Matlab, I do:

> plot(rand(1,10),'k')

but this gives a BROWN line in Octave / gnuplot... wouldn't it be 
convenient to have the 'k' available in Octave's plot function?

Cheers,
Matthias