Bleeding through

The gradual visibility of under layers of paint, caused when oil-based pigments of the upper layers become transparent with the passage of time. Source: Ralph Mayer, "A Dictionary of Art Terms and Techniques"<br><br>In oil paints, degrees of visibility of underpainting when upper layers become translucent with the passage of time. Or, a color that doesn&#39;t set, but affects subsequent overlays. Also, ink on paper which stains the image beyond where it was intended.Also see bleed and bleed-proof.