Donor zone - Command for getting to the donor zone will be ::dz. Every skill you are able to train here will give increased exp. There currently is spots for thieving, mining, fishing, woodcutting, firemaking, smithing and prayer. You can also train afkables at the bank booths to gain the increased exp in the donor zone. Also there is 3 portals in the donor zone that take you to many places.
Yellow - Same as the teleporter at home
Green - Teleports you to a special dungeon that contains 5 Thermonuclear smoke devil bosses. (good for slayer task)
Purple - Special teleporter only in the donor zones - see picture below -