If anyone is still having an issue with this, I was able to solve the problem by specifying all colors of the chart using aRGB values.
For example, this code:
chart.SetSeries(new[]
{
new Series {
Name = "Average",
Data = GetAverageData(),
Color = Color.Crimson
},
new Series {
Name = "Order",
Data = GetOrderData(),
Color = Color.RoyalBlue
}
});
was converted to:
chart.SetSeries(new[]
{
new Series {
Name = "Average",
Data = GetAverageData(),
Color = Color.FromArgb(255, 220, 20, 60)
},
new Series {
Name = "Order",
Data = GetOrderData(),
Color = Color.FromArgb(255, 65, 105, 225)
}
});