JToolbar component does not look good on Nimbus L&F on solaris. See the attachments.

JDK version: 1.6_0_01
Solaris version: Sun OS 5.11
Window manager: Gnome 2 18.2

Does not look good means that it is visually unapealing and differs from the UI spec. (or at least the image I received from the branding expert).

The particular differences against the UI spec (or to what I consider UI spec, note that I may be wrong on this as I haven't received an official statement of which of the current online documents is to be regarded as official UI spec.) are:

1) Implementation lacks color gradient (see the spec. image, now attached)
2) Missing rounded corners ..
3) Missing grey outline ..