It’s worth noting that the Times released this tool a decade ago. IIRC, around 2015 there was also a push for better colorblind friendly color palettes, especially on the heat map space (I remember watching a matplotlib demo, maybe, with viridis support). While there’s many visualization practices we do better at now, and while this could be due for a redux, I still think it"s one of the best interactives to date. It’s an OG for sure.