XPS One 2720 colour temperature adjustment

So from what I've read, there is no color adjustment option on the hardware itself.  The On Screen Display just has options for brightness, sound, etc.  Thus if you wanted to adjust colors, you would have to do so in the OS itself.  Which version of Windows are you running?

I am using Windows 10

I did a quick Google search and found multiple options.  I'm not a fan of Windows 10 so I haven't played with it much, but click here and you should find your answer. 

Thanks for your suggestion, but it does not work.  I called Dell and they said that this computer cannot adjust the colour temperature of the screen. That's extremely annoying for a pc that cost almost £2,000.