How does observation using the Webb Space Telescope in infrared light change the visual emphasis compared to visible light?

It pierces through obscuring dust clouds to reveal hidden regions of star formation.

The primary advantage of utilizing infrared light, as done by the Webb Space Telescope, is its ability to penetrate dense clouds of interstellar dust that are opaque to visible light. In the context of a spiral galaxy, visible light primarily emphasizes the hot, young, blue stars on the surface of the arms. Conversely, infrared radiation passes through these obscuring dust lanes—the serpentine lines traced in visible imagery—allowing astronomers to see deep inside the cold molecular clouds where protostars are actively forming before they become luminous enough to dominate the visible spectrum.