How to advertise without words?

In 2006 the Municipality of Sao Paulo banned the use of written words and big billboards on façades. Since then, the commercial activities of Sao Paulo have been finding out new ways to continue advertising their products and services. So far I’ve identified 4 strategies:
- Claim a colour! Colours attract attention, so painting or cladding the entire façade of the building helps. Optional is to paint the sidewalk as well.
- Move! Use moving elements to attract attention. Human beings with flags also do the job.
- Depict! Instead of writing about the merchandise, visual signage can be made by painting on the façade or the shutters of the building.
- Open up! Make the building as open as possible to the street, so the inside merchandise is completely visible.
Is Sao Paulo changing from a city full of letters to a city full of colour?