I just upgraded to 3.2.1, but I had this question even for 3.0.2. The online darktable manual says in section 3.3.6, " The color picker is activated by pressing the icon." However, I see no such Icon on my darkroom screen. I don’t know whether I just don’t see it or if it’s actually not there. Where on the screen is it supposed to be?
PS - My suspicion is that I’m not seeing the entire screen, but I don’t have that problem with other applications.