Whatthewhy has a very good eye! 
Nice photo set including the upper most sections that I have not been able to photograph. I look forward to seeing those bright purple sheetrock panels rise up to the sky.
Those newly installed sheetrock panels over the metal studs not only ‘work’ better than the previous plywood boards: the purple sheetrock LOOKS stunning too.
This is a fantastic project to follow for those (like myself) are fascinate with the construction process of these new towers.
AI Grok question: Why the bright purple colored panels on the facade of new building under construction?
AI EXCERPT -
When you see bright purple panels on the facade of a building under construction, you are looking at exterior gypsum sheathing —specifically a product line called Gold Bond eXP Extended Exposure Sheathing , manufactured by National Gypsum.
It serves a completely different purpose than standard interior drywall. It is installed on the building’s exterior frame for several reasons:
### 1. Weather and Moisture Resistance
Unlike interior drywall, which uses paper facing that can mold or rot if exposed to water, these exterior purple panels are faced with a coated fiberglass mat . This fiberglass layer, combined with a specially treated water-resistant gypsum core, allows the panels to withstand rain, wind, and high humidity during the construction process before the final siding or facade is applied.
### 2. Mold and Mildew Protection
The exterior of a building is highly susceptible to moisture buildup. The fiberglass facing and treated core offer maximum protection against mold and mildew growth, ensuring that moisture doesn’t compromise the building’s structural integrity or indoor air quality later on.
END AI QUOTE
BTW - Thanks to Whatthewhy for a great photo set. 