面有菜色

dāng nǐ guàn zú dà liàng de lǜ dòu tāng shí nǐ kě néng huì miàn yǒu cài sè le

当你灌足大量的绿豆汤时，你可能会面有菜色了。

Or filling yourself so full of mungbean juice that you start to go green in the face.