I am not trying to impose my view on anyone, i'm just saying this maybe someone else will share my opinion.

For those of us who own a 2go account you will observe there are different levels and for every level there is a star with a different color. Novice => red star,
Amateur => purple star,
senior => pink star,
enthusiast => lime green star,
professional => green star,
expert => blue star ,
leader => sky blue star,
veteran => orange star,
Master => yellow star.

After the Master level you find yourself in another level named ultimate with a black star.
My questions are why is this level hidden and will they use black to represent the star? Hope they are not initiating people unconsciously into any evil cult via this social app?
.....Just my thinking