hello i have problems with block texture...

 

when you hold the block its fine, but when you place it. then it will turn lilla and Black how do i fix this

 

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package com.Lutherion.MinecraftExpansion.blocks;

import com.Lutherion.MinecraftExpansion.Reference;

import net.minecraft.block.Block;
import net.minecraft.block.material.Material;

public class BlockObsidian extends Block {

 public BlockObsidian() {
  super(Material.IRON);
  setUnlocalizedName(Reference.MinecraftExpansionBlocks.OBSIDIANBLOCK.getUnlocalizedName());
  setRegistryName(Reference.MinecraftExpansionBlocks.OBSIDIANBLOCK.getRegistryName());
 }

}

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package init;

import com.Lutherion.MinecraftExpansion.blocks.BlockObsidian;

import items.ItemObsidianingot;
import items.ItemObsidiansword;
import net.minecraft.block.Block;
import net.minecraft.client.Minecraft;
import net.minecraft.client.renderer.block.model.ModelResourceLocation;
import net.minecraft.item.Item;
import net.minecraft.item.ItemBlock;
import net.minecraftforge.fml.common.registry.GameRegistry;

public class ModBlocks {
 //add Block here
  public static Block obsidianblock;
  
  public static void init() {
   obsidianblock = new BlockObsidian();
  }
  
  public static void register() {
   registerBlock(obsidianblock);
  }
  
  private static void registerBlock(Block block){
   GameRegistry.register(obsidianblock);
   ItemBlock Item = new ItemBlock(block);
   Item.setRegistryName(block.getRegistryName());
   GameRegistry.register(Item);
  }
  
  public static void registerRenders() {
   registerRender(obsidianblock);
  }
  
  private static void registerRender(Block block) {
   Minecraft.getMinecraft().getRenderItem().getItemModelMesher().register(Item.getItemFromBlock(block), 0, new ModelResourceLocation(block.getRegistryName(), "inventory"));
  }
}

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{
    "variants": {
        "normal": {
            "model": "mod:obsidianblock"
        }
    }
}

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 {
    "parent": "block/cube_all",
    "textures": {
        "all": "mod:blocks/obsidianblock"
    }
 }

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{
    "parent": "block/cube_all",
    "textures": {
        "all": "mod:blocks/obsidianblock"
    }
}

 

im new to java so im a Little confused

 

what i acctually have to do to make the texture Work for the block when i place it

 

here is the link to what that instructed me

 

this is just some of the codes. should i also post the other codes?

sigh i give up..........