Good stuff in this thread – a very polished theme that makes DT’s underlying solid UX really shine.
I’d be very curious if any GTK - C savvy devs can identify where icon assets like these icons come from:
I can’t seem to find icon files or CSS references to them in the source code. Below is a rough mockup of the icons I might use - each is a nice little SVG square.
My comprehensive Darktable redesign is approaching ready-for-dev testing, and I’d love some assistance or hints towards SVG icon implementation 
In this thread I like the comment about difficulty seeing where module X ends and module Y begins - a good use case. I use single open modules so didn’t think of that!