Do people actually like all of the overdesigned clutter to the point where it makes them not want to switch sites?
To me, the stripped down clarity on Lemmy is a feature. I remember back in the day when people flocked to Facebook from MySpace, in large part because they were sick of eye gouging customized pages and just wanted a simple, consistent interface. The content, not the buttons to click on it are the draw right?
The color schemes seem good enough to me. I mean, sure it could perhaps be more interesting or vibrant but ehh. There are way more important issues to focus on, in my opinion.
Kbin has support for custom CSS. There are still some bugs and plenty of things to iron out, but once the platform matures, expect there to be plenty of color and vibrance haha.