A sane way to assign a stroke to have a color not in the default palette
If I want to assign a color from a Library to a Stroke, my only option is to make the object's background color the Library color, and then use the Swap Fill and Stroke button.
The Stroke color menu has lots of weird buttons to import colors that I don't care about. Why not replace those buttons with like a Library Colors button, or a Recent Colors button, or heaven forbid a color dropper?
My first impression of Illustrator was that assigning colors to things is harder than in any other program I have used in my entire life. This impression remains true even today.