Who Psychedelicized Chameleon?

The Chameleon has a role in a series directed by Chihuahua. One morning, as he looks at a video sent by an alleged fan and is the victim of an overdose of colors. He can't continue to act in the series. Who is the criminal in this strange tale? Sherlock is set to appear in the series, but has major stagefright. How will he surmount it?