The Vatican restoration team reveled in inducing a jarringly colorful transformation of the frescoes with special, cleaning solvents and computerized analysis equipment. However, the restorers did not achieve this (2) effect as they claimed merely by removing the dirt and animal glue (employed by earlier restorers to revive muted colors) from the (2) frescoes: the team removed Michelangelo’s final touches as well. Gone from the ceiling is the quality of suppressed anger and thunderous pessimism so often commented upon by admiring scholars. That quality was not an artifact of grime, not a misleading monochrome imposed on the ceiling by time, for Michelangelo himself applied a veil of glaze to the frescoes to darken them after he had deemed his work too bright. The master would have felt compelled to add a few more layers of glaze had the ceiling radiated forth as it does now. The solvents of the restorers (4) stripped away the shadows of the frescoes, reacted chemically with Michelangelo’s pigments, and ultimately produced hues the painter never intended for his art.
just for (2) one answer is "effect, as they claimed, merely" can I get the reason?