This is the 3580th most frequent French word.
jasper
To variegate or streak with various colors.
Here, 'jasper' is used as a verb meaning to create speckles or variegated patterns on an object.
Il aime jasper des pierres pour ses projets d'art.
He likes to speckle stones for his art projects.
In this usage, 'jasperé' describes an object (the church walls) that is variegated or speckled, typically in visual appearances.
Les murs de l'église sont jasperés de couleurs vibrantes.
The walls of the church are speckled with vibrant colors.
The term 'jaspé' describes texture or appearance, referring here to a mineral exhibiting a mottled or patterned surface similar to jasper.