I think it's just paint colour options, interior or seat trim these days at least on the 3 and 5 Series. The indivdual paint options are crazy money here, something like upwards of 3k thanks to VRT so hard to justify it. The other option packs that BMW offer are more appealing for that sort of money plus some of the cheaper non Individual paint options are quite good these days. Also many 330e and 530e you see on the road here probably came from the UK company car fleet so those options wouldn't have been ticked because of higher BIK.

GT Motors in Baldoyle often get in some really high spec cars with Individual colours if that interests you.