Hi Jon another nice Harvey shot ... I do like again the head on approach of him .
Taking your words about tone and color .... this got nothing to do with your set up of your screen or machine . Regardless of the position in a dark or light environment .... it is just you who is fiddling and creating multiple versions of one image and get lost in all the images . To check your colors , regardless of your screen set up ... use the color sampler tool and check the read outs to identify any " false " colors . Quite easy ...
If you have a lot of images taken from one shoot ... i.e. Harvey , just copy color settings from one to the other .... easy , and you will have consistent colors on the whole series of images .
You leaving me puzzled with Google Chrome forcing into something weird .... I think will show colors by default in sRGB , but I might be well wrong . At least I do not fiddle with my browser no nmatter which browser I do use .
Cheers Andreas