A colour picker app for Ubuntu and Linux which allows picking any colour on the screen and remembers the last few you picked.
Made with đź’ť for 
snap install pick-colour-pickerYou'll need the following dependencies:
gir1.2-dee-1.0gir1.2-gdkpixbuf-2.0gir1.2-glib-2.0gir1.2-gtk-3.0gir1.2-unity-5.0python3-cairopython3-gipython3-gi-cairo
Pick can be run from the checkout with python3 -m pick.
A setup.py is present, so python3 setup.py install is possible, but beware that uninstalling setup.py-installed apps is not as easy as it should be and prepare accordingly if you plan to use this install method.