Hi
This is the Default Palette for the Terrain system, hope it helps

Slot 1 = Sand_D.png
Slot 2 = Sand2_D.png
Slot 3 = Sand3_D.png
Slot 4 = Sand4_D.png
Slot 5 = Grass_D.png
Slot 6 = Grass2_D.png
Slot 7 = Grass3_D.png
Slot 8 = Grass4_D.png
Slot 9 = Sediment_D.png
Slot 10 = Sediment2_D.png
Slot 11 = Sediment3_D.png
Slot 12 = Sediment4_D.png
Slot 13 = Moss_D.png
Slot 14 = Moss2_D.png
Slot 15 = Moss3_D.png
Slot 16 = Rock_D.png

I have attached a basic PDF to help with the palette please review and tell me if I have anything wrong thank you

looks like its not only me that doesn't know the names

Scenario: you spend hours creating your terrain using the default palette, you get it looking really nice and think mmm think I will use a different rock texture, so you click away and select a nice little rock texture you have created, you put it in what you thought would be the right slot and bam your terrain looks poo, banding and mismatched colours looks awful so then you go to choose the original texture !! then it hits you what was in that damn slot so away you go clicking on all the variations of textures but no matter what you do you cannot find the original texture, you go away and bang your head against a wall :End of scenario

I think you might get my drift

@GraPhiX while I don't know myself the default textures and slots, I for sure know of the above scenario, has happened to me a few times now

Sorry i use slot 0-15 like in the shaders, but this is the default order

slot0: sand_D
slot1: sand2_D
slot2: sand3_D
slot3: sand4_D
slot4: grass_D
slot5: grass2_D
slot6: grass3_D
slot7: grass4_D
slot8: sendiment_D
slot9: sendiment2_D
slot10: sendiment3_D
slot11: sendiment4_D
slot12: moss_D
slot13: moss2_D
slot14: moss3_D
slot15: rock_D

Thank you Preben, I have created a little PDF you can download it from the first post