noun
color tag; color oni
A children's game similar to tag where the 'it' player calls out a color and others must touch something of that color to be safe.
See also: 鬼ごっこ
子供たちは校庭で色鬼をして遊んだ。
The children played color tag in the schoolyard.
鬼ごっこ is the general term for tag; 色鬼 is a specific variant where colors are used.
Compound of 色 (color) and 鬼 (oni, the 'it' player in tag).