Bug 396144

If you select the color picker from the toolbar, it doesn't pick colors from Reference Image the way that quick color picker (ctrl + click) does. Also it would be nice to have an option to pick colors from Reference Image without holding ctrl (but as an option).

Reproducible: Always.

Steps to reproduce:

A. Color Picker Tool:

1. Open new document, color it to two colors (X and Y), add a reference photo.
1. Choose Color Picker Tool.
2. Click on Reference Image (repeatedly, on top of both colors).

Actual results:
3a. When on color X, color picker prints out (in Tool Options docker) that specific color and updates current color to it. When on the other color (Y), it prints out different values and updates current color to it. When on various parts on Reference Image, it prints out different values (different than X and Y and usually picked colors differs from themselves), but the current color remains not updated.

Expected results:
3b. Current color is updated to the new value picked from Reference Image.

B. Picking by just clicking (the way it worked in Reference Docker):

1. Open new document, add a reference photo.
2. Click on reference photo.

Actual results:
3a. Painting behind the Reference Image.

Expected results:
3b. Option to pick colors from Ref. Image with just clicking; when selected/checked, after clicking it should update the current color to the color picked from the Reference Image.

Relevant posts from reddit: 
A, B - https://www.reddit.com/r/krita/comments/8u83le/krita_410_released/e1dcnq1/
A - https://www.reddit.com/r/krita/comments/8vp7p2/color_selector_tool_not_working_on_the_reference/

A is very much needed, B is (for me) a nice addition, but should be optional because this functionality might be confusing.