<https://forums.getpaint.net/topic/31843-hsv-eraser/#comment-427260>
<http://schema.org/text>
"I think it would be quite easy to write a  little plugin that would erase the matching or non-matcing colors for two images, if that would be useful. "
<https://forums.getpaint.net/topic/31843-hsv-eraser/?tab=comments#comment-426908>