For eg. I installed Blur-glassy theme today to check with all options selected in my Fedora 40 installation. Still I needed to install the blur option separately and colors too. After everything still Dolphin and Discover do not look anything like the picture shown.

I have seen this while trying out many themes. They either partially deploy or sometimes not.

Is it because they were built for KDE 5 and this is 6 or something?