Portal 2/MLP Crossover

Now a rainbow's tale isn't quite as nice
 As the story we knew of sugar and spice
But a rainbow's easy once you get to know it
With the help of the magic of a pegasus device

(music break)

Let's delve deeper into bahaghari philosophy
Far beyond that of Cloudsdale's mythology
It's easy to misjudge that floating city
With it's alluring decor and social psychology

But with all great things comes a great responsibility
That of Cloudsdale's being weather stability
How, you ask, are they up to the task
To which the answer is in a simple facility

(music break)

In the bahaghari Factory, where your fears and horrors...

This is my first artikulo for this club and so I hope that you all enjoy it. It took a lot of time researching all the different cutie marks, choosing which ones I liked the most, and finding pictures for those ponies. Anyways feel free to leave comments and become a tagahanga if you really like it. Before I start I want to make it clear that this is opinion based. If you are unhappy with what I choose you can tell me so in the comments, but do so in a mature manner. Meaning please don't cuss in response to my artikulo or to other comments.
Now that that's out of the way let's begin. And once again...