How to highlight a relationship tab

Hi there,

I'm looking to highlight certain relationship tabs (say the Documents tab under a Part item). Now I've found controls to edit the CSS of various fields of the Part form, but I haven't been able to figure out how I can for instance change the background colour of the Documents tab label (in order to pull a users attention towards it, for instance).

Is it at all possible to dynamically change the look of that particular piece of the form (by firing a method on the onLoad and/or onFormPopulate events for instance), or are those controls entirely inaccessible?

Kindest regards,

Remco van Oosterhout