Mods can reference game textures, making it easy to adopt the Foundation art style.
To support modders, Polymorph Games provides a package of watermarked textures for use in 3D software.
You can reference a Foundation texture into a mod using the texture file name, however:
ClothTexture_blue.pngClothTexture_green.pngClothTexture_red.pngClothTexture_white.pngWater.pngTex_Gen_Wall_WoodPLanks_01A_Diff.pngTex_Wall_Stone_Rustic_01A_Diff.pngWater.pngTex_Ivy_01A_Diff.tifTex_Bushes_01A_Diff.tifTEX_Pine_Tree_01A.tifTEX_Deciduous_Tree_02A.tifTEX_Deciduous_Tree_01A.tifTex_Gen_Roof_Thatch_01B_Diff.pngTex_Gen_Roof_Thatch_01A_Diff.png