問題： 論文中的彩圖一定要額外的付費嗎？

我不是很了解這句話：Color art will be reproduced in color in the online publication at no additional cost to the author. Color illustrations will also be considered for print publication; however, the author will be required to bear the full cost involved in color art reproduction. Please note that color reprints can only be ordered if print reproduction costs are paid，這是說如果論文接受后一定要付這筆錢，還是說論文送印的時候要付費？請幫忙。