In the following picture, how do I make the brown color 100% transparent, the blue color 100% opaque and every gradient between the blue and the brown, semi transparent?
Seems like a color swap operation with color 1 mapping brown to 100% transparent and color 2 mapping blue to 100% opaque?
If I have to first select the brown for a background layer, how do you tell Paint.net to make the gradient's various levels of transparent?
The Magic Wand tool would seem likely too, but you have to do a kind of "transparent partial" erase. A kind of "erase by color" perhaps?
Thanks!
