A color picker can affect a frame or a scrollframe, but not if it's attached inside them...

[davidedc]

...take a color picker and move it inside a frame, then use the setTarget from the color picker. Result: the color picker modifies the desktop instead of the frame.

note that if you get the color picker to partially overlap the frame instead, setting the target does the right thing: user is asked of whether the desktop or the frame should be set as target, and everything behaves well.

Same thing with scrollframe instead of frame

(this was fixed in Zombie Kernel but not sure when, would need bisection)