HSV Color Randomizer is a 3ds Max utility from Jon Seagull that produces random variations of a chosen color, working in HSV color space. The workflow is direct: drag the color you want to randomize into the top swatch, dial in the amount of randomness, and press the button to populate the nine bottom swatches with variations.
The tool centers on this single, focused task, giving you a set of color variants derived from a source color and a controllable degree of randomness. It carries a version number of 0.1 and lists compatibility with 3ds Max versions 7, 6, 5, and 4.
A demo video is available, and further details can be found on the developer's page. Within the ScriptSpot library, HSV Color Randomizer is a compact utility for generating color variations without manual adjustment of each swatch.