I made the following image in PDF format (a figure for a scientific paper):
On my Linux machine, I opened this image in evince and okular and it seems to appear here very well. It also appears this way in Google Drive.
However, when I open it with Preview on my Macbook, it looks like this:
Why do colors blend in the Preview and is there a way to prevent this from happening? (I will have to send this figure as part of a job for a printer to print and I would like to ensure that the figure remains "whole" for printing).