I haven't seen many designs of blinds. But some of them do look great. I think that blinds Sonata Design in Vancouver BC https://sonatadesign.ca/vancouver-blinds/ is a great solution for modern flats. It's just important to find a design that suits your flat or home. And a good consultant can do that.

I haven't seen designer blinds. I very often see blinds in different colours. But I like blinds much better.