Custom Color Series for Pie Chart

Just wanted to share this in case anyone else wants to use the code. I wanted to create a custom color series for pie charts instead of using a single color or the "rainbow" default (I am looping through data to specify the series, not listing each one like in this example). So I made this expression rule:

with(
  local!halfColorSeries: reverse(
    remove(
      remove(
        ri!colorsList,
        length(
          ri!colorsList
        )
      ),
      1
    )
  ),
  local!fullColorSeries: append(
    ri!colorsList,
    local!halfColorSeries
  ),
  local!colorSeriesIndex: mod(
    {
      ri!index - 1
    },
    {
      length(
        local!fullColorSeries
      )
    }
  ) + 1,
  local!fullColorSeries[local!colorSeriesIndex]
)

For the color parameter in a!chartSeries() call the expression rule passing a list of hex colors as strings (ri!colors) and the data index (ri!index)

I used this color palette for mine to match our app's branding:  {"#276bf2", "#93aefd", "#ecf1ff", "#8598c7", "#00488f"}

a!pieChartField(
    series: {
        a!forEach(
            items: local!datasubset,
            expression: a!chartSeries(
                            color: rule!GetColorByIndex(local!colors, fv!index),
                            
                            ...
                                

Was able to create this:

The expression rule expects a list of strings (at least 2) and an integer, I didn't add null checks/validation/error handling. Interested to see if it can be done in a better way. Thanks!