Wrong bit depth of 8bit IndexedTIFF file

Hi,

seams the identify command is not able to recognize correctly the  
channel depth of an Indexed color TIFF file (http://rapidshare.com/files/241488844/tiff_color8bit_palette_.tif 
).

The result is:
Depth: 8-bit
   Channel depth:
     red: 8-bit
     green: 8-bit
     blue: 8-bit

but it should be:
Depth: 8-bit
   Channel depth:
     color: 8-bit

I'm using ImageMagick-6.5.3-2 Q8 WIN.

It should be very useful to change the output into these labels:
- Depth -> BitsPerSample
- Channel depth -> SamplesPerPixel

By the way you can download a draft copy of my mapping work between IM  
elements and NISO NISO Z39.87-2006 elements at (http://rapidshare.com/files/241495329/IM_NISO_Z39-87-2006_mapping_draft.pdf 
)

Please tell me if it is useful for the proposed switch. It involves  
changes of the elements and the relative output values.

My goal is using IM for preservation purposes, extracting metadata  
from images and wrapping to an XML container (i.e MIX Schema - http://www.loc.gov/standards/mix/) 
  .

Thanks,
Alessandro