Creates a new color object that represents a blend between the current color and the shadow color.
- macOS 10.0+
The amount of the shadow color used for the blend. This should be a number from
0is interpreted as
1is interpreted as
NSColor object. Returns
nil if the colors can’t be converted.
The shadow color is provided by the
shadow property. Call this method when you want to darken the current color for use in shadows.