Index of /Kindle/brokenimgs

Icon  Name                    Last modified      Size  
[DIR] Parent Directory - [TXT] ReadMe.txt 2012-06-28 00:05 886 [PNG] bad-talkerd.png 2012-06-28 00:04 296 [PNG] bad-whoareyou.png 2012-06-28 00:04 246 [IMG] good-talkerd.gif 2012-06-28 00:04 164 [IMG] good-whoareyou.gif 2012-06-28 00:04 105 [   ] test-linux.mobi 2012-06-28 00:04 22K [TXT] test-linux.txt 2012-06-28 00:04 1.3K [   ] test-win.mobi 2012-06-28 00:04 22K [TXT] test-win.txt 2012-06-28 00:04 1.4K [TXT] test.html 2012-06-28 00:04 221
Problem:

kindlegen appears to generate different output for some PNG image forms. 
Particularly, black comes out as transparent.

Description:

bad-whoareyou.png - a PNG file, 256 colour palette.
good-whoareyou.gif - a GIF file containing the same image.
bad-talkerd.png - a PNG file, 256 colour palette.
good-talkerd.gif - a GIF file containing the same image.

Convert file with:
  kindlegen test.html > test-linux.txt

View output in Kindle for PC, or Kindle previewer, and observe that the 
two images that should look the same come out differently - the black 
region is transparent, and the transparent region is white. This is most
obvious if you change the background to black, rather than white - the
transparent region in the PNG is being displayed black, and the black
region is being displayed transparent.


Expectation:

Both images (GIF and PNG) should appear the same.