QTreeView -- Alternating Row Colors Oddity

[chuckshaw]

I have a QTreeView displaying data from a custom model. Basically i turn on alternating row colors to make everything readable. However the alternating row colors do not paint all colums, only columns with data or where a model item has been created. Is there anyway to get that to paint across all columns regardless? In large trees its really distracting and ugly. This screen shot is using Qt 4.3.2 and QSA 1.2.2 btw.

Thanks,
Chuck