Well, I'm too impatient and creative to let it go undone, so I've come up with something on my own. In case anyone has any interest in this whatsoever, I felt compelled to share.
For the most part, most tiles in the tilesets I'm using in my game are as default as possible. That being said, what I'm using for my moon is essentially a modification of the default World tilesets. If you like the default World tilesets, then my moon tilesets will likely work smoothly (from an aesthetic point of view) in your game.
Here is a shot of what the in-game looks like with the tiles:
Don't forget to include the Terminator when making your moon (actually, it's 2 Terminators,
which is very appropriate!) I recommend the shadow pen, along with a parallel process event
that changes the player or vehicle sprite to a darkened version and back depending on that
character's MapX (or MapY if you're using horizontal Terminators).
Effectively the tiles are a neat hue-switch from the default; the FF4-like plateau autotile
seen here was made very simply by inverting the default "hole" autotile and filling in the
former center hole portion with material.
One final caveat: I originally worked on all the water tiles to make them blood-red so they'd
look off-hue as well, but I didn't complete adding purple edges to the autotiles or anything
because I decided not to use water on my moon. Use/edit as you like—might be neat to add
to the regular world tile.
Moon_A1:
Moon_A2:
Moon_B:
As you can see, not all tiles were even modified, but there's more than enough to
create a moon with even more features than FF4 or my screenshot. Feel free to
continue modifying or use as-is
:) .
Enjoy!