iOS 12 Washed out color / colour

I just installed iOS12 on my iPhone X and upon reboot noticed that my screen seems kind of washed out - colours have lost their ‘pop’. I did some googling and people seem to think Apple may have changed the way backgrounds behave once applied, but is seems to me as though the entire OS now experiences washed out colours. I would really like my screen to look as good as it did before this update. It’s rather disappointing. I hope this is a software bug and not a permanent change...