I would like to be able to: create a shape -> hit i -> pick a color from source x ; hit (modifier key) e.g. shift + i -> pick stroke color. I see it as intuitive workflow as you could accomplish a repetitive task on one keyboard-sequence instead of actual use case: create a shape -> hit i -> pick a color from source x ; stop - defocus - find pointer - move pointer to right sidebar - find stroke field - find and click on eyedropper icon - find color source and move pointer to color source -> tap/click. Guess its Fitts Law... and its important, as it would speed up workflow process without distractive interruption.

BTW: With the same modifier key pressed, you could apply color to the stroke. Right now, any click on a color palette affects only the fill.