MVC2 TE stick, Xbox 360 version, Start and back buttons on top side of panel question

I watched a couple unboxing on youtube and noticed that some versions have different color start and back buttons. I’ve seen yellow and white, and on madcatz website they show black buttons.

I just ordered one and i’m wondering if it’s random or if anyone knows if the 360 and ps3 versions come with different colors.

Any input?