M1 consistent category color mapping across charts

Problem

Investigate and design a top-level category color mapping system so repeated semantic values such as Accessories, Electronics, and Tools keep the same colors across every chart. Explore API shapes including a top-level color underscore map attribute that accepts either an ordered value list from a query or inline values, plus an explicit value-to-color map. Define how ordering and manual color assignment should interact, how mappings apply automatically across chart types, and how the renderer should resolve colors consistently when charts share categorical domains.

Context

Possible Solutions

Plan

Implementation Progress

Review Feedback

• Review cleared