Created some charts using flex 3.2 some months ago. It all worked fine. We attached a dataTipFunctionHandler on the ColumnChart to display data as we wanted it formatted. The background color was white, and the text was black, making the tip easy to read. When we rebuilt our app with flex 4.1.0, the dataTip box's background color turned a dark gray, making the text very difficult or impossible to read. Tried changing the backgroundColor on the ColumnChart and on it's container, but neither of these attempts worked.
Does anyone know of another way to change the background color, short of completely writing our own custom dataTip component?
For what it's worth - I've found design view to not be very effective as showing an accurate "picture" of what is on the canvas, especially if the objects are at different depths.