Only the ghost body parts are dual colored. The red cross is in single color.
The attached G-Code is for Ultimaker 3+ with extruder 1 as black and extruder 2 as white.
For the best result, remember to completely remove the residual of the print support.
P.S> My retraction setting may not be good enough to avoid bleeding of the darker color. As it can be seen from the left (lower) hand and some minor color blending on the face. Later, I will do slight modification in the model for improvement.
Ultimaker 3 Extended