"Bank of America Plaza’s original plans not only included a twin tower, but called for Tower 2 to have gold-tinted windows — and a purple argon outline at night. Without a doubt, minds would have been blown after seeing 900 vertical feet of green argon and purple argon, in addition to Reunion Tower’s “dancing” lights and the new LED systems on the Omni hotel and Hunt Oil Tower. Original plans also called for two-story pyramid caps on each tower, but those were nixed by the FAA because of downtown’s proximity to Love Field."
http://www.dallasing.com/dallas-twin-towers-bank-of-america-plaza-cityplace-centre/
