The original DoR tileset was constructed in a way that allowed users to use grass tiles in place of sand by altering the palette to use whites instead of greens. This, however, won't work in the updated tileset (coming soon), unless you want frozen grass on your overworld instead of snow.

In SD3, sand doubles as snow, with just a simple palette swap. DoR, however, requires more than a simple palette swap to use sand as snow, because sand uses the same browns as the mountains and trees do. Additionally, some people don't like having brownish sand, even if there is a palette with yellower browns available, made for deserts.

Here I am attempting to kill two birds with one stone. These edited sandy mountains can now be used as snow, which I think looks particularly fluffy. They also double as sand, if you like. Furthermore, since the sand in these tiles now uses a separate color from the mountains, it's now possible to custom color it however you like by changing one CSet.

You will have to edit some tiles in order to change other "objects on sand" into "objects on snow." However, these should be simple tile edits, and in many cases just a simple recolor. I apologize that I'm not including all of those in this update, but the point here is to do all the hard stuff for you.

A totally new sand palette is included in CSet 2. There is an edited snow palette in CSet 3, and one of the "winter" CSets from DoR is included unchanged in CSet 4. For more options, rip CSet 3 from this image and use it to replace CSet 4 in the DoR tileset's palette 27 (winter palette). Sand and snow use the same tiles, here, so you only need to rip the tiles once.

Note: I do not recommend using these for sand tiles in the regular DoR overworld palette. This would result in dark orange sand.

Phosphorescent Image for the icey ground objects, although darned if I can remember his current forum nickname. If anybody can correct me, please feel free to send me a PM.