this manstion is called OG because this mansion is a two story mansion and in every floor will be a line of colurs.The colurs 
are Orange and Green and that stands for OG and I made them capitals because Orange and Green are names and names 
have a capital letter in the front.I was going to make a pool but fogot to build a pool because I was busy of making a post of this
mansion on planet minecraft so a hope you will like this mansion because it was hard to build and design it.