GR translation: night-dusted

[Paul Mackin]

On 8/5/2011 4:06 AM, Mike Jing wrote:
> P117.39-40  ..., glassy ambrotypes of her late husband Austin night-dusted inside gilded frames up on the mantel ...
>
> What is "night-dusted"?
>
>   		 	   		
slightly grayish resulting from the way ambrotypes are made (I think).

Night doesn't really have dust, but making an analogy with snow dust, 
which leaves things with a whitened aspect, night dust leaves things a 
bit grayish.

That's the picture I get.

P