Bottom Sheet Text Color and Appearance

Question

I have followed this link and this library to implement Bottom Sheet functionality and best part is I have successfully integrated the same one.

Now I have three small queries:

1. I want to set text color as Black and Bold

2. I want to divide Grid in 3 columns only (as still showing 4 items in first row and 2 items in second row - In case of Tablets)

3. I want to put divider between Grid items

Code:

new BottomSheet.Builder(this, R.style.BottomSheet_Dialog)
            .title("Choose")
            .grid()
            .sheet(R.menu.menu_bottom_sheet)
            .listener(new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            // TODO
        }
    }).show();