Good morning,
the first pic in #21 showes the schematic. You need a male (computer side) and a female (monitor side) vga connector. 1=Red 2=Green 3=Blue 6,7,8,9,10=Ground 13=H sync 14=V sync.
Make a short circuit between pin 2 and pin 3 at the monitor side.
Connect green directly and blue via 330Ohms and red via 47 Ohms.
This gives mexican two colour.
In the pictures attached you can see the black cable comeing form the computer than a gender changer and the white cable goes to the monitor.
I took screenshots of a landscape in Gran Canaria picture 5. The flowers look a bit poor in two colour
because with red and cyan you can not get all colours. Note the bluejeans of the people in picture 2. It is not blue any more. But as toled before, if you don't know the original you'll accept it.
Interesting experiment, try it out
.
Kind regards,
Darius