Linked from
The 99 pages that link to Color theory, each with the reason it gives.
ExpressionismNarrower topic: Expressionist color often departs from observed hues to intensify mood.
PointillismNarrower topic: Color relationships guide the placement of dots.
OrphismNarrower topic: Orphists drew on color relationships to make color carry the composition.
ColoritoNarrower topic: It supplies principles painters use when arranging color for visual effect.