so, I have:
- magic
- cbSize (ignored by the decoder in feh)
- a mysterious empty u32
- two mysterious non-empty u32’s
- width
- height
- palette?
- image itself
the palette is interesting because it looks like half of it is just null data:
out+="010004000000000000000000000000000000000000000000000000000000000000008000008000000080800080000000800080008080000080808000c0c0c0000000ff0000ff000000ffff00ff000000ff00ff00ffff0000ffffff00"