It was unclear from the site whether this would be the painting of the whole estate, one building - or perhaps just one flat - but it seems the organizer wants to bring in several renowned artists to 'paint the heygate'.
From a letter, he/ she sent to Southwark Council:
I have six world renowned well known urban artists (local and overseas) who have told me personally that they want to come down to paint the Heygate and work with this local community. Imagine the possibilities.
They list this video by Sony Bravia as an inspiration . . .