code: public static void setColorForInitialsThumb(TextView initialsView, int position) {
          int backgroundColor = THUMB_COLORS[(position) % THUMB_COLORS.length];
          setColorsThumb(initialsView, backgroundColor, Color.WHITE);
      }
docs: Sets the thumb color that displays users initials
  
  @param initialsView TextView used to display number of collaborators
  @param position     Used to pick a material color from an array