Sharon,
 
       As a longshot, you might try using the Munsell charts for gley in their s
oil
color charts.  If I remember correctly (my charts are not with me just now), the
y
run a range of greens that *might* describe your color range.  The browns in the
soil color charts will likely hit your brown-glass colors as well, though you ma
y
well be out of luck with other non-earthtone colors.  Munsell also markets a pla
nt
tissue color chart that, as one might imagine, runs a whole gamut of greens.  Th
e
sticky point with this solution is the pricetag: US$145.00.  I pulled the price
from
the 1997 Foresty Suppliers catalog, which tends to run a bit high on Munsell
products.
    You can also get the charts for gley separately from Forestry Suppliers, or
probably direct from Munsell.  Try browsing http://www.munsell.com.
    You might be able to devise another solution, but most archaeologists have (
and
use) the Munsell standards.
    Hope this helps.
 
hasta luego,
-jason
--
Jason Menard
Department of Social Sciences- Industrial Archaeology
Michigan Technological University
[log in to unmask]
http://www.ss.mtu.edu/IA/iahm.html
 
sharon wrote:
 
> Dear list members:
>         In Rio Piedras, Puerto Rico, we found a stratified deposit that
> consisted almost exclusively of glass.  There were more glass fragments
> than soil in there.  One of the problems we are facing is finding an
> appropriate way of describing the color of the glass.   There are many
> different variations, like for example 12 shades of green.  Is there a
> color chart appropriate for the description of glass' color?
>
>         Any advice will be really appreciated.
>
> Sharon Melendez
> Archaeologist
> Puerto Rico
> [log in to unmask]
>