As you may or may not be aware I have been messing about with the user interface of IQ.  I have created a problem which I don't know how to rectify (apart from a complete wipe and re-install which would loose all my modifications).  I was experimenting with the 'themes' which are not an officially supported feature of IQ.  Some of the themes are quite nice however.

 

One problem which arose when I changed the themes is that the document pane title bar goes black when the document pane has the focus.

 

I have changed back to the 'official' theme but the black title bar on the document pane remains and I can't seem to get rid of it.

 

It's been like this for a while and is not a showstopper but it is mildly annoying.

 

These images illustrate the problem, excuse the large images (they have already been reduced to ¼ of their original size).

 

 

 

Without the focus the title bar appears as normal.  But when the document pane has the focus this happens.

 

 

 

The question is what files do I delete or change to get the original default behaviour back?