Unable to do feedback dialog and customize buttons color

[RachidLeLaborantin]

Hi
I like your library, it's wonderful, good work!
But I need some features that I don't found there
-I want to create one dialog for rating with stars and comments and another dialog for feedback only without star. I tried to remove all the stars by defining numbers of stars equal to 0 but it throws an exception. Also the input comment doesn't appear while a star is not chosen.
-I'm not able to change the buttons text color, I used custom style but I don't know how to apply it. Moreover, try to make the button text color changeable programmatically