tango66, I think the point was to allow alternate colouring to distinguish groups of values rather than the classic line by line greenbar. However this is still possible with an expression in the Background Color:
RunningValue(Fields!Ticker.Value,CountDistinct,"DataSet1") Mod 2 = 1,
To be fair, this version wont work correctly if you have a different sort order than ticker. Stan's will work with different sort ordering, so if you add, say interactive sorting by Date, you'll still get the alternating bars when the ticker changes.