The Wybron 84520 Coloram IT is a professional 4-inch aperture scrolling color changer designed for precise and reliable color manipulation in theatrical, television, and architectural lighting applications. This unit functions by housing a long, continuous roll of dichroic color media that scrolls horizontally across its aperture, allowing lighting designers and technicians to instantly change the color output of a fixture without the need for manual gel swaps. The "IT" designation typically indicates an internal, self-contained design intended for integration directly into compatible luminaires or for use in custom optical paths where a compact, precise color-changing mechanism is required. Its core purpose is to bring dynamic, repeatable color control to lighting rigs, enabling seamless color transitions and a vast palette from a single source.

The mechanism is engineered for quiet, smooth, and fast operation, which is critical during live performances or broadcasts where mechanical noise must be minimized. It utilizes a high-torque stepper motor and a precision drive system to accurately position the color scroll, ensuring consistent and repeatable color selection. The unit is designed to communicate via standard DMX512 protocol, allowing it to be seamlessly integrated into a larger lighting control console network. Each Coloram IT can store and recall multiple colors from its scroll, and the system often includes features for calibrating the scroll position and managing media tension to prevent drift or wear over time.

Constructed with durability in mind, the Coloram IT is built from robust materials suitable for the demanding environment of professional entertainment lighting. Its compact 4-inch aperture size makes it compatible with a wide range of ellipsoidal reflector spotlights (ERS), followspots, and other fixtures with similar optical gate sizes. The use of high-quality dichroic glass filters ensures intense, saturated colors with excellent heat tolerance and consistency, unlike traditional gelatin filters. The Wybron 84520 Coloram IT represents a specialized, professional-grade tool that expands the creative possibilities of static lighting fixtures by adding the dynamic, programmable dimension of remote color control.