Support Plotly Express color sequences

[iynehz]

Do you think if it's good to support plotly express color sequences in this crate?
https://plotly.com/python/discrete-color/#color-sequences-in-plotly-express

Minimally it could be create a struct named like ColorSequence with basic methods like len() and modular get(), and export the color sequences as constants.

[andrei-ng]

Hi, @iynehz.
Yes, I think adding that support would be a nice feature.