The 'outline-color' property specifies a color for the outline for
an element.
The outline properties create a uniform line around an object in order
to draw visual attention. An outline is slightly different than a border
in several ways: An outline is drawn starting "just outside the border
edge" and is allowed to be non-rectangular. Outlines are always rendered
on TOP of an element's rendering box and do not influence the
box's position or size calculation; the document does not need to be
re-flowed when a border is rendered or hidden, but the outline may
overlap other nearby elements.
Allowed Values
inherit
[CSS2] [O7]
Type: Explicit
Description:
Explicitly sets the value of this property to that of the parent.
invert
[CSS2] [O7]
Type: Calculated
Description:
This value inverts the color of the outline to the opposite value of
the color "underneath" the outline to ensure proper contrast.
[color]
[CSS2] [O7]
Type: Explicit
Description:
Sets the border to the indicated color value.