code: public int combineTint (int tint) {
      int otint = this.tint;
      if (tint != Tint.NOOP_TINT) this.tint = Tint.combine(tint, otint);
      return otint;
    }
docs: Combines {@code tint} with the current tint via {@link Tint#combine}.
  @return the tint prior to combination.