Less heavy look and feel for some controls
The styling of some of the controls we didn't update with the Adwaita refresh still feels a bit heavy, which doesn't fit in very well with the new stuff.
Checkboxes and radio buttons
Even with the new blue color, the checkboxes feel a bit heavy because the controls are small, and the borders are quite prominent.
A related issue is radio buttons on listboxes, which feel especially heavy in that context, as well as too small.
This is a mockup from before the style refresh that would maybe move us in the right direction:
Levelbars
The thin line with lots of borders around it just feels kinda old and weird. And I'm not sure why there is this extra white container around it?
Sliders and Progressbars
My concerns here are similar to the others, but it's less of an issue here. Perhaps just toning down the color difference between border and inside a bit would help?
@frederik.feichtmeier said he would be interested in maybe working on this. I'd like to experiment a bit with things here, and then maybe move the discussion to one or more issues/MR in GTK.