I have a .tga image with a large portion of fully transparent pixels. Doing
a color picker on one of these pixels gives Red, Green, Blue, and Alpha all
equal to zero. I would like to do a global transformation on my image,
making all pixels that have an alpha of zero have RGB be 0xff00ff. In other
words, I want fully transparent pixels to all have color magenta instead of
black. The reason for this is that my tool uses this color in its display.
How do I do this?
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