Color correct rendering on Mac will change the colors of all layout tests.
All images that don't have embedded ICC profiles (so, almost all images), and all CSS colors will be converted from sRGB color space to the output color space (currently "Generic RGB Profile", but will likely be changed to something very noticeably different, such as BT2020 gamut with a 1.8 gamma).
This is probably most sane to do one suite at a time.
Comment 1 by bugdroid1@chromium.org
, May 13 2017