Android: How to change the colour of menu icons

MenuItem menuItem = menu.findItem(R.id.your_menu_item);
Drawable drawable = menuItem.getIcon();
if (drawable != null) {
    // If we don't mutate the drawable, then all drawable's with this id will have a color
    // filter applied to it.
    drawable.mutate();
    drawable.setColorFilter(color, PorterDuff.Mode.SRC_ATOP);
    drawable.setAlpha(alpha);
}