What did you do?

using https://github.com/python-pillow/Pillow/blob/main/Tests/images/hopper.jpg

h = Image.open('hopper.jpg')
h.convert('P').show()
h.convert('PA').show()
h.convert('P').convert('PA').show()
h.convert('PA').convert('P').show()

What did you expect to happen?

I expected all of the images to look essentially the same.

What actually happened?

The image converted to P then to PA has no color.

What are your OS, Python, and Pillow versions?

• OS: Windows 10
• Python: 3.9.6
• Pillow: 9.2.0