I don't know if this on your end or on the texture pack end but when I change the resource pack to the new minecraft textures (New Default+) your overworld ores have the new stone texture but our end ores have the old netherrack texture, this is on 1.12.2, MMDLib rc2.36, MMD OreSpawn 3.3.1179, Base Matals rc2.332 and Nether Metals rc2.76.
I don't know if this on your end or on the texture pack end but when I change the resource pack to the new minecraft textures (New Default+) your overworld ores have the new stone texture but our end ores have the old netherrack texture, this is on 1.12.2, MMDLib rc2.36, MMD OreSpawn 3.3.1179, Base Matals rc2.332 and Nether Metals rc2.76.