General terms:
* Color-coding: This is a common term used for organizing anything by color, not just clothes.
* Color sorting: This is a more neutral term for arranging things according to their color.
* Chromatic organization: This term is more formal and emphasizes the use of color as a principle for organization.
More specific terms related to clothes:
* Rainbow order: This refers to arranging clothes in the order of the colors of the rainbow (red, orange, yellow, green, blue, indigo, violet).
* Hue organization: This term is more technical and emphasizes the use of color hues as a principle for arranging clothes.
* Color gradient: This term is used when arranging clothes in a gradual transition from one color to another.
The best term to use will depend on the specific situation and the desired level of formality.