This is a combo of two older posts: Use Eyedropper and Pick Colors from anywhere

You can pick colors from:

1. Paint Editor - Color picker tool (aka eyedropper)
   Paint Editor - Fill Color
   Paint Editor - Border Color
   Color Sensor Tiles - <color touching ?> and <touching color?>
   

And yet not all are the same.
First they use three different mouse cursors:

• eyedropper - (Color Picker tool)
  cursor arrow - (Fill Color and Border Color)
  Hand with finger - (Color Sensor tiles)
  

Then there are three different ways/constraints on picking colors

• color from canvas only - (Color Picker tool)
  color from palette only - (Fill Color and Border Color)
  color from anywhere on the page - (Color Sensor tiles)
  

We need one Color Picker to rule them all.
The eyedropper is probably the best choice for a cursor, as it is probably the most universally recognizable.
The ability to pick a color from anywhere on the screen (including a palette when in Paint Editor) is much more powerful and lets kids design and use their own color schemes.

I met an artist who taught me to use pictures of animals and flowers to pick color schemes.
He convinced me when he asked: “Have you ever seen an ugly flower or bird?”

I agree with everything you said.

Support. I know this topic is 8 years old, but I still agree.