Amber Ore now comes with a red background!

With this I have added a Nether Amber Ore as it made sense to put something that is known to burn a lot into the dimension where it is quite hot and flamy.

I also fixed an issue where you were not able to mine the Terracotta Tiles with a Pickaxe at all.

Tweaks to the Amber Ore texture have also been made to make it blend in with the surrounding stone more.