Code review comment for lp:~ab-tools/widelands/minimap

Hello together,

thanks for all the feedback:
I see the 2 pixels variant is the most favored one.

@Timewi: I've uploaded an image comparing different color variants over a road network here:
http://www.ab-tools.com/temp/widelands3.png

(Don't be confused about the still visible map borders: I know nobody wants them, so they won't be there when I commit the final code. They are just for testing purpose now.)