Except for the “Solid” selection, Bar and Pie Fill selections in the updated charting engine differ in rendering in the original charting engine. All gradient types in the original charting engine map to the same gradient display in the updated charting engine. Gradient rendering is subtlety visible only with wide bars in a bar chart or large pie regions. Color 2 is not used with gradients in the updated charting engine.
The following screen shots illustrate the Bar and Pie Fill differences between the original charting engine and the updated charting engine from left to right:
Horizontal
Vertical
Forward Slash
Backward Slash
Grid Diagonal Grid
Horizontal Gradient
Vertical Gradient
Forward Diagonal Gradient
Backward Diagonal Gradient