[riledhel]

It's literally atributed in the readme file https://github.com/ai/nanocolors

[sparky_]

From what I've gathered, the attribution was introduced retroactively, recently, by rebasing the repo with that and on top of the upstream commits, only after the discussion was picked up publicly.

[iskin]

It was added in the first day, when Colorette author wrote me.

We even agreed on the attribute text.