But suppose you could do this: scan the pages of medieval, multi-colored illuminated manuscripts to record the exact design and color values. (As I noted once, the colored inks in manuscripts fade much less than paint on wood or canvas. The hand-painted illustrations give us an authentic idea of the tonal palettes used by artists in the Middle Ages.)
Then, you develop software that enables the robot to ink in exactly the same colors as the original on each page. You could even use parchment-like paper. When the process is complete, you have a nearly exact copy of the historical document … and besides, the software files could be stored so that reproductions could be made any time, even if the original were to be lost in some calamity.
High-quality modern color printing can give a pretty fair image of hand-painted manuscripts, but even at its best can't reproduce the sheen and mineral-impregnated tones of colored ink applied flat rather than bit-mapped in the four-color process.
Imagine recreating in actual size an illuminated manuscript such as the 15th century masterpiece, Les très riches heures du duc de Berry: