当印金墨时，几黄的底色；印银墨时，用灰的底色等。
When printing gold , a yellow primer is used , when printing silver , a grey primer is used , etc.
此外，从使用铅白和银墨绘制的面部以下的层次能够看出，蒙娜丽莎的脸部原本比现在宽。
The underlying layers of the face-painted using lead white and mercury vermillion-also show it was wider than the end result appears .
银墨