How to make a custom bamboo?

The mod I want to make is quite simple.... really.. More colors of Bamboo (The idea came from a minecraft mod in my dream)

Though I am not sure if MCreator has built in support for making this type of block in its GUI. Should I use the custom code editor? and if so, what is the syntax to make my block properly extend the base minecraft bamboo block? I know what I should be doing, just not how to "spell it properly", if you know what I mean by that!