Shenzhen is not all futuristic blue all the time, as shown in the picture in the article. Most of those buildings have full RGB capability. Here's a drone video of Shenzhen at night.[1]
For the 45th anniversary of the Shenzhen Special Economic Zone last month, the building lighting and rooftop lasers were coordinated with a 12,000 drone show.[2] Mostly white, some blue tinge, red buildings on the more official messages. Not much green. That's Shenzhen looking futuristic on purpose.