the corner office

This should be an interesting sight... thanks to cellular network operator MTN, the roof of Sandton city is changing colour for a month:

In celebrating its 10th year of operation, MTN will light the top of Sandton City y'ello. The prism that sits on the top of Sandton City is currently green, and this will be the first time in Sandton City's 30 year life span that an external organisation will be branding the Sandton City sky scraper. From 10 June until 10 July, Sandton's most famous landmark will be y'ello and visible from when the sun sets.

(Thanks to P for the link)