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Please note this is an old forum thread. Information in this post may be out-to-date and/or erroneous.
Every phpdocx version includes new features and improvements. Previously unsupported features may have been added to newer releases, or past issues may have been corrected.
aha found the solution. I had an error in one of my style array's which did not raise an PHP - Error -> strange. But anyway fixing that error solved the width problem as well.
... I also found the Test - folder which contains examples of the undocumented "'cell_color' => 'FFFFFF'," paramanter which works as expected as well.