public void setMapper( Function<Color, Color> mapper ) {
			this.mapper = mapper;
		}
Sets a color modifying function that changes painted colors.
The {@link Function} gets passed the original color and returns a modified one.
<p>
Examples:
A ColorFilter can be used to brighten colors of the icon:
<pre>filter.setMapper( color -&gt; color.brighter() );</pre>
<p>
Using a ColorFilter, icons can also be turned monochrome (painted with a single color):
<pre>filter.setMapper( color -&gt; Color.RED );</pre>

@param mapper The color mapper function
@see #setMapperEx(BiFunction)
@since 1.2
flatlaf-extras/src/main/java/com/formdev/flatlaf/extras/FlatSVGIcon.java