@Sigma:
Find the following lines, and remove them.
<!-- 127--> <element id="Controls.TabBody.Default" bg="120,120,120" fg="210,210,210" bdr="100,100,100" />
<!-- 127--> <element id="Controls.TabBody.Disabled" bg="120,120,120" fg="210,210,210" bdr="100,100,100" />
The downside is that it will make the selected tab of "device" setting no longer differentiated from the background, but still it would be better than the current.