i don't remember seeing colour schemes like that over here in the UK...was it a USA only thing..
Nope, Moonrise was one of the colors you could order for your Klein.
In 1990 & 1991 the stock color for Attitude was Team USA, 1992 Horizon, 1993 Gator, 1994 & 1995 Sea&Sky and 1996 Team Klein.
In some countries it could have been so that the local importer chose the colors and parts specs and ordered bikes to the warehouse to be sold. In that case the buyers had take choose from what was available to them.
At least in Finland that was the case if you didn't know better. When my LBS ordered Kleins from the Finnish importer, they basically told the LBS owner that "We have one Backfire and three Team USAs in that size. What do you want to do?" So basically they did not tell him that yes, you can order some Sunbursts and Moonrises if you want to...
1991 Specialized Stumpjumper Epic Ultimate
1992 Fat Chance Yo Eddy!
1993 Klein Adroit Team Storm