How are theme colours assigned to series on a line chart visualisation?
I have a report with 20-30 line charts. Each chart has mutliple series - selectable via a slicer.
What I'm trying to understand is how PBI decides which colour to assign to which slicer value? I'm using a custom json template and it seems to cycle through the colours in order, but I've no idea which series will get which colour - I thought it picked the first slicer value alphabetically but I've seen this change and now am really confused..