<https://forums.getpaint.net/topic/7075-how-do-i-do-a-gradient/#comment-102484>
<http://schema.org/text>
"First, you choose the two colors you want to fade between as your primary and secondary color.  Then hit the gradient tool on the toolbar  (looks like this   ) and click and drag on the canvas to make it. \nAlso, F1 is the help button for Paint.NET.  You can get the answers using that much more quickly.  :-) "
<https://forums.getpaint.net/topic/7075-how-do-i-do-a-gradient/>