I like to make my masks and I always notice something funny. Whenever I paste a transparent image on MS Paint (not sure what version), the transparent colors are always the default black (0, 0, 0).
For example, pasting the Stack Overflow logo from its tour page results to this:
Why is black usually the default color in MS Paint? How do I change the default color?
The black has something to do with the transparency. If something is transparent, there is no color given, so Paint must've chosen (0, 0, 0) because there's no given color whatsoever.
The way to remove the default black in the images is to change Color 2 to (0, 0, 0) and the result from the previous image will be:
There's still some black, and that's because the black doesn't match with the default. If we want other colors to be used to replace the black however, we unfortunately still don't know how.