I've taken a look at the Samsung UK Online Store and can see that case is available on 3 colours.
All three look nice although my preference in cases has always been the black colour.
I wish you all the best with your quest for a case.
Current Phone ~
Samsung Note 20 Ultra 5G SM-N9860_256Gb SnapDragon 865+
Samsung One Ui 3.1/ Android 11.