ok this image has multiple issues
the source likely comes from PCKView?
that tool never worked for me so here some second hand knowledge
pckview generates bmp files (not indexed?) with wrong colors
see
https://openxcom.org/forum/index.php?topic=1321.msg32646#msg32646there is no easy way to "fix" the palette because the export makes stuff like this:
it converts pixel with color index 30
(56,0,0) and pixel with color index 111
(48,0,0) into the same color the same color
(48,0,0)to make a a pck or working png out of these images the tool would have to magically know if it should convert the color
(48,0,0) back to index 30 or 111
in the ufo battlescape palette are only a handful of these nonresolvable colors other palletes have it worse
"fix palette" would fix a RGB image into a working indexed png if the color are correct but they are not
next problem is size pckview genereates these lines between images the PNG2... tools do not expect that sort of image size you could change the behaviour in the options to 33/41
- name: PNGtoPCK
out: ZIP
mode: PNG2PCK
in: PNG
width: 33
height: 41
but that would generate wrong pck files
ok how can you solve this..
i guess pckview has an option to transform its own format back to PCK i would use that and then use the xcomconverter to convert the pck back to a png