My display looks very drab and less vibrant when images are viewed with the default applications (Image Viewer, in this case). And even in Chrome (which is also my default browser), the colours look very dry. I don't remember any change that I could have probably made in my colour settings.
Here are three screenshots. One viewed with Image Viewer, and the other one, which is much more vibrant, viewed with Pix. The third screenshot shows my current colour settings. I use Linux Mint 18.2.