[boomboomsubban]

It's the peak of customization yet the community is full of people saying "I didn't like GNOME's palette so I use Plasma now." I never know how to respond to those people. If they're happy, whatever, but it feels like most people are unaware themes exist.

[BearOso]

To be fair, themes are only grudgingly supported by gnome. KDE has more available configurability for color schemes, but the number of Qt themes that handle everything correctly and look good is small.

I think resolution-independence has made creating themes much more difficult, and not a lot of people are up to the task.