Duncan, I did the adjustments on the monitor not software, even with contrast and brightness at zero there wasn't two shades of white just the one.
The way I had to set it before I bought the Huey was to adjust the hue and saturation in the graphics card profile. That is now set to defaults so it doesn't conflict. I have also checked that adobe gamma isn't loaded.
It may look out to me now because I am so used to it being wrong.
I am using a 22" Acer Monitor AL2216W, it only has a setting for warm, cool and custom it doesn't give temp like my old monitor.