1D random black and white mask in Inkscape

Question

I have been trying to create a random black and white mask like the following in Inkscape without success:

My nearest try has been to use black as initial color for the clones, 100% of change of color lightness for each column and alternate the sign of color changes. The result is this chessboard-like mask

The randomize option does not work because it randomizes the color property and not the "index" of the clone whose color is to be switched.

Note: Although my first approach was through the user interface, solutions using the scripting capabilities of Inskcape are also welcome.

Answer 1

I tried the following approach:

1. Make an original tile with undefined color (shown as ?)
2. Make a row of tiled clones, with initial color black, and 100% random light component. This will result in a row of random gray levels.
3. Group all the tiles together and select the group.
4. Apply the extension Color->Black & White to turn those grays into either black or white.