Rename Red Sand(stone) to Silt(stone)
"Red Sandstone" is a bit more of a mouthful to say than it needs to be, and regular Sand isn't called anything like "Yellow Sand" or "White Sand". But they don't even have to be called that in the first place - Anyone who's been to Badlands in real life and had to do laundry after can tell you that the ground particles there are much finer and dustier than sand, aka Silt. Red is also a pretty rare color of sand to find IRL, and doesn't occur at all in Continental US (at closest there's pink and light orange), which the Badlands biome in Minecraft appears to be based on.