as 1.0.</p>
<p>This is essentially the same as <a href="dart-ui/BlendMode-class.html">modulate</a> blend mode, but with the values
of the colors inverted before the multiplication and the result being
inverted back before rendering.</p>
<p>This can only result in the same or lighter colors (multiplying by black,
1.0, results in no change; multiplying by white, 0.0, results in white).
Similarly, in the alpha channel, it can only result in more opaque colors.</p>
<p>This has similar effect to two projectors d