Gorgeous ‘Boop!’ builds a colorful, tuneful, graceful world for cartoon heroine

Jasmine Amy Rogers radiates star wattage in the title role of “Boop! The Betty Boop Musical.” (Matthew Murphy and Evan Zimmerman)

Here’s what doesn’t need to change about “Boop!,” the new musical getting its pre-Broadway tryout at Chicago’s CIBC Theatre this month:

• A single step of director/choreographer Jerry Mitchell’s spectacular footwork.
• A single note in David Foster’s score.
• The gorgeous gray-scale cartoon world that shimmers like silk as it unspools on stage with lush, cinematic detail.