I'm red-green colorblind and I can tell a significant difference in color when using my B+W 77mm Kaisemann CPL. The images are quite warmer using the filter. The best thing to do is use a custom white balance using a gray card if you do not like it. As the color change is global (consistent across the entire frame), the color change is [relatively] easily correctable in post if you do not set a custom white balance.

However, that top image seems to be suffering from uneven polarization more than anything else. Was the picture taken with a wide-angle focal length?

EDITED: Mine is an MRC filter. Go figure.