I just installed TeeChart .NET Build 3.5.3054.17205. Previously I was using Build 3.2.2980.19082.
Changing the Color.A property (alpha) of a Line series in code no longer has any effect. It used to change the Transparency property of the series. Now, nothing changes, and after a chart refresh the Color.A property is back to its original value.
The (obvious

Jay