I like the overall design of the building; and do not want to be overly critical on this point. However, this has always been my opinion about those ‘exposed’ structural steel eye beams at the crown.
I would be interesting to conduct a formal survey on that particular question: the results would be interesting to hear. That being said, You did conduction your own ‘informal’ survey - and I suspect the results would be exactly as you have stated. Those structural steel beams look CaCa or at least: unfinished. 