Large housing blocks have a reputation for sameness. This one answers it with paint: every loggia has a coloured wall, and no two neighbours share a colour.
Orientation, not decoration
From the street the colours look playful. From inside they are practical. Residents give directions by colour, children find their balcony from the playground, and the grid of concrete becomes a map.
Cheap and lasting
Paint is the least expensive material on the site, and it is the one people remember.