To answer a few question,
the color is actully a very nice ark earth, but with the flash from the camera, the color did turn out a bit goldish.
It will be in black, Dark Earth and Ranger Green or OD.
As far as the 553 bandwagon, it is a nice sight with the necessary hardware build into it.. if you are not some ninja jumping off to battle in the middle of the night.. you are probably good to go with the standard 552. the 553 does offer a few advantages...
1. shorter overall length
2. better battery life
3. integration with your Surefire, next gen IR laser batteries.
4. build in mount that is recessed into the base which also provent snagging.
5. an upgraed electronics
6. better dive rating.
like i said, if you are happy wiht your 552, i wouldn't bother..
No NV version is available for now.. this is a pure military sight..so this is as is for the time being..