Thanks you all for your feedback.

I wish podmaster and hossman were less sarcastic in their feedback, but it helped alot..

I updated the code, here are some changes I've made:
-Added counters of how many times each color appears.
-Added random cube generator. (Thanks podmaster.)
-Added a reset button. (Thanks again podmaster.)
-Fixed the bug hossman's invalid configuration shows. (Thanks hossman.)
-Changed the message for invalid cubes.(Thanks jsprat.)
-Added the show status option.