Created a Flex 2.0.1 component that extends DataGrid, which works correctly outside of Xcelsius.
When the component is brought into Xcelsius it becomes transparent.
Xcelsius uses class level styles and if there is a Flex class with the same name it will use the Xcelsius Style instead.
Manually apply the styles you want to each Flex component (in MXML or using setStyle). For a list of the styles Flex uses, look in the Flex SDK framework folder at defaults.css.
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