vista : Jspinner is not matching with the native spinner

JSpinner is not matching with the native spinner like, the background color of the jspinner where the value is display is white, but where the native is different , its a textfield.
The arrow buttons are combined, but where as in native there is one pixel gap between the arrow buttons.
 I have attached the screen shots.

Step to Reproduce:
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1) Run swingset2.
2) Select "ColorChooser" demo.
3) select "HSB" tab.
4) Observe that Jspinner as described above.

I tested this on java 1.6.0 & there update release & jdk1.7.0 b14.