Guess me : I contain faces of different colors for fun they get mixed with one another It's easy for them to............

Question

I contain faces of different colors
for fun they get mixed with one another
It's easy for them to hang outside their 'race'
but it's quite tricky to put them back in their place
With time and patience it can be done
but to mix them up again is way more fun.

Answer 1

A Rubik's cube