Status icons are used to indicate the status of hardware and software.
They come in two sizes: 16px, 22px, and use the monochrome
Status icons allow a user to discern the current state of hardware and
software at a glance. They reassure users that software is functional,
and warn them when hardware is dysfunctional.
The base of a status icon indicates to the user what item the state of
the icon represents.
The overlay of a status icon indicates to the user what status the item
the icon represents is in.