Ed - thanks for the link. The one problem I've found is many actual photo's are all black and white, but it was nice reading about one that I plan to do which is LST-476 which my great-uncle served on.
Tim - thanks for your link too, which is the same kit with instructions (which Watchman asked for) as I have. I took some time to search through your site and there really doesn't seem to be a standard paint scheme.
I think I'll probably go with the haze gray, seems like that should work at least for 476 as I haven't come across any photos with any splotches or camo in it.