So I got the GW-9300GY today...
First impressions: First of all, a shout out to Time Garden (seller on Rakuten) for shipping quickly, not charging tax, gift wrapping (even though I did not request) and throwing in a free Protrek keychain. This kind of service is why I will continue to buy from him. The watch is very nice, I love the color and the negative display seems pretty legible.
Some differences I noted from the regular black (positive display) mudman:
-The buckle of the GW-9300GY is matte steel, unlike the polished steel on the standard black model. This seems like an odd choice because the keeper of the GW-9300GY is polished, so I would expect the buckle to have been polished too. Actually, I would prefer it all to be matte, because matte goes better with a watch that looks military.
-The inner ring under the bezel is matte black on the GW-9300GY, which is a nice choice over the shiny black ring under the bezel of the standard black model.
-The carbon fiber under the band is similar to the carbon fiber on the standard GW-9300
-The image engraved on the caseback is engraved deeper on the GW-9300GY than it is on the standard black model. The same is true of the letters (also deeper). I don't know if they are all like this, but this is how mine is.
-The color gray is similar to the MIRB frogman, but unlike the frogman it is matte not glossy and it is a very tiny bit lighter. There is no sparkle to the gray of the GW-9300GY
-Casio used the American spelling of "gray" in the Men in Smoky Gray series, unlike the British spelling used in the Ocean Grey series. I am not sure why they changed it, or if it was intentional.
-The green bits of the GW-9300GY are more of a military olive green, not a lime green like in some of the photos. The green on the top of the watch does seem a bit brighter and more colorful than the green on the bottom, but it is not distracting or noticeable. Maybe they wanted more contrast against the negative display.
Now the pics!