AqaColors.java

public class AqaColors implements IBlockColor {
	
	@Override
	public int colorMultiplier(IBlockState state, IBlockAccess worldIn, BlockPos pos, int tintIndex) {
		if(state.getBlock() instanceof RandomOreBlock) {
			RandomOreBlock block = (RandomOreBlock) state.getBlock();
			//worldIn.getTileEntity(pos);
			if(worldIn.getTileEntity(pos) != null) {
				TileRandomOre tile = (TileRandomOre) worldIn.getTileEntity(pos);
				int rgb = tile.red;
				rgb = (rgb << 8) + tile.green;
				rgb = (rgb << 8) + tile.blue;
				return rgb;
			}
		}
		int rgb = 255;
		rgb = (rgb << 8) + 255;
		rgb = (rgb << 8) + 255;
		return rgb;
	}

}

CommonProxy.java

public class CommonProxy {	
	public static Block blockGenerator;  // this holds the unique instance of your block
	public static ItemBlock itemBlockGenerator; // this holds the unique instance of the ItemBlock corresponding to your block
	public static Item hungerstorer;
	public static RandomOreBlock testBlock = new RandomOreBlock(Material.ROCK, 0, 0, CreativeTabs.MATERIALS);
	public static TooPowerfulTNT tnt = new TooPowerfulTNT();
	public void preInit(FMLPreInitializationEvent e) {
		testBlock.register("test");
		register("toopowerfultnt", tnt);
		//testBlock.setFiles();
		/*blockGenerator = new BlockGenerator().setUnlocalizedName("generator");
	    blockGenerator.setRegistryName("generator");
		ForgeRegistries.BLOCKS.register(blockGenerator);
	    
	    itemBlockGenerator = new ItemBlock(blockGenerator);
	    itemBlockGenerator.setRegistryName(blockGenerator.getRegistryName());
	    ForgeRegistries.ITEMS.register(itemBlockGenerator);
	    
	    Item ring = new ItemRubyRing().setRegistryName("rubyring").setUnlocalizedName("rubyring");
	    ForgeRegistries.ITEMS.register(ring);
	    
	    hungerstorer = new ItemHungerStorer().setRegistryName("hungerstorer").setUnlocalizedName("hungerstorer");
	    ForgeRegistries.ITEMS.register(hungerstorer);
	    
		GameRegistry.registerTileEntity(TileGenerator.class, Main.MODID + ":" + "generator");
		NetworkRegistry.INSTANCE.registerGuiHandler(Main.instance, new GuiHandler());*/
		
		GameRegistry.registerTileEntity(TileRandomOre.class, Main.MODID + ":" + "randomore");
		
		EntityRegistry.registerModEntity(new ResourceLocation(Main.MODID + ":" + "deadly_projectile"), EntityProjectile.class, "deadly_projectile", 1809, Main.instance, 64, 20, false);
		
    	Main.INSTANCE.registerMessage(HungerPacketHandler.class, HungerPacket.class, 0, Side.SERVER);
    	Main.INSTANCE.registerMessage(KillPacketHandler.class, KillPacket.class, 0, Side.SERVER);
    	
	}
	
	public void init(FMLInitializationEvent e) {
		GameRegistry.registerWorldGenerator(new OreGen(), 0);
		Minecraft.getMinecraft().getBlockColors().registerBlockColorHandler(ClientProxy.INSTANCE, CommonProxy.testBlock);
	}
	
	public void register(String name, Block block) {
		String name2 = name.toLowerCase();
		ForgeRegistries.BLOCKS.register(block.setRegistryName(name2.toLowerCase()).setUnlocalizedName(name2));
		ForgeRegistries.ITEMS.register(new ItemBlock(block).setRegistryName(name2.toLowerCase()).setUnlocalizedName(name2));
	}

}

RandomOreBlock.java

public class RandomOreBlock extends Block{
	public RandomOreBlock(Material materialIn, int hardness, int resistance, CreativeTabs tab) {
		super(materialIn);
		this.blockHardness = hardness;
		this.blockResistance = resistance;
		this.setCreativeTab(tab);
	}
	
	String name;
	
	@Override
	public boolean hasTileEntity(IBlockState state) {
		return true;
	}
	
	//RandomOreTile tile;
	
	/*@Override
	public Item getItemDropped(IBlockState state, Random rand, int fortune) {
		if(tile.getColor().getRed() > 127) {
			return Items.APPLE;
		} else
			return Items.BAKED_POTATO;
	}*/
	
	@Override
	public TileEntity createTileEntity(World world, IBlockState state) {
		super.createTileEntity(world, state);
		return new TileRandomOre();
	}
	
	public void register(String name) {
		this.name = name.toLowerCase();
		ForgeRegistries.BLOCKS.register(this.setRegistryName(name.toLowerCase()).setUnlocalizedName(name));
		ForgeRegistries.ITEMS.register(new ItemBlock(this).setRegistryName(name.toLowerCase()).setUnlocalizedName(name));
	}
	
	public void registerItemTexture() {
	    ModelLoader.setCustomModelResourceLocation(Item.getItemFromBlock(this), 0, new ModelResourceLocation(Main.MODID + ":" + name, "inventory"));
	}
	
	@Override
	public BlockRenderLayer getBlockLayer() {
		return BlockRenderLayer.CUTOUT;
	}

}

RandomOreTile.java

package matyk.aqarium2.tiles;

import java.util.Random;

import net.minecraft.block.state.IBlockState;
import net.minecraft.client.entity.EntityPlayerSP;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.EntityPlayerMP;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.network.NetworkManager;
import net.minecraft.network.play.server.SPacketUpdateTileEntity;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;

public class TileRandomOre extends TileEntity {
	public byte red, green, blue;
	
	public TileRandomOre() {
		Random rnd = new Random();
		red = (byte) rnd.nextInt(255);
		green = (byte) rnd.nextInt(255);
		blue = (byte) rnd.nextInt(255);
	}
	
	@Override
	public boolean shouldRefresh(World world, BlockPos pos, IBlockState oldState, IBlockState newSate) {
		return true;
	}
	
	@Override
	public void onLoad() {
		super.onLoad();
		world.markBlockRangeForRenderUpdate(pos, pos);
	}
	
	@Override
	public NBTTagCompound writeToNBT(NBTTagCompound cmpd) {
		super.writeToNBT(cmpd);
		cmpd.setByte("red", red);
		cmpd.setByte("green", green);
		cmpd.setByte("blue", blue);
		markDirty();
		return cmpd;
	}
	
	@Override
	public void readFromNBT(NBTTagCompound cmpd) {
		super.readFromNBT(cmpd);
		this.red = cmpd.getByte("red");
		this.green = cmpd.getByte("green");
		this.blue = cmpd.getByte("blue");
	}
	
	@Override
	public NBTTagCompound getUpdateTag() {
		super.getUpdateTag();
		NBTTagCompound cmpd = new NBTTagCompound();
		cmpd.setByte("red", red);
		cmpd.setByte("green", green);
		cmpd.setByte("blue", blue);
		markDirty();
		return cmpd;
	}
	
	@Override
	public void handleUpdateTag(NBTTagCompound cmpd) {
		super.handleUpdateTag(cmpd);
		this.red = cmpd.getByte("red");
		this.green = cmpd.getByte("green");
		this.blue = cmpd.getByte("blue");
	}
	
	@Override
	public SPacketUpdateTileEntity getUpdatePacket(){
	    NBTTagCompound cmpd = new NBTTagCompound();
	    cmpd.setByte("red", red);
		cmpd.setByte("green", green);
		cmpd.setByte("blue", blue);
		markDirty();
	    return new SPacketUpdateTileEntity(getPos(), 1, cmpd);
	}

	@Override
	public void onDataPacket(NetworkManager net, SPacketUpdateTileEntity pkt){
	    NBTTagCompound cmpd = pkt.getNbtCompound();
	    this.red = cmpd.getByte("red");
		this.green = cmpd.getByte("green");
		this.blue = cmpd.getByte("blue");
	}
}