Fix RGBA Image loading #1270
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Fix RGBA Image loading #1270
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Proposed fix for issue #1269
Using
Image.convert("RGB")results in broken backgrounds for some images, this PR changes the logic for RGBA images to useImage.alpha_compositewith a new empty image instead. See issue above for details.The color chosen for the alpha fill in this PR is pure white, which is different from what the old implementation defaulted to (pure black), since it seemed like a better fit for most images. This can be changed if required.