02-03-2019, 02:50 PM
Quote:Interesting...I would have thought that with a bitmap composed of pixels, each pixel would have a specific color assigned to it, and the "color to alpha" function would affect pixels having only the exact color specified (in this case h1cf905) .
That would not give very good results and would have a jagged outline as pixels will transition in color as they get close to another color. You can achieve what you are asking by using the fuzzy select tool. Set the threshold to 1 and select a color on an image and look at the outline of the selection. You can play with the various options, but I don't think you'll achieve exactly what you are thinking.
This color to alpha plugin does more of what you are imagining but only works well with 2 well defined colors and takes a dog's age to process. Still a handy addition to the toolbox for certain situations.