If your living in a cardboard box, a bit of paint might help make the place a bit better. Paint could help:
* help keep the rain out
* colors that make the box harder to see camouflage They can't beat you up if they can't find you.
* solar colors/formulations to heat the box - black to radiation.
solar colors/formulations to cool the box - white to radiation. Avoid annoying reflections that might cause box to be picked up by the city
* make it smell better by adsorbing bad odors or emitting pleasant odors
* cheap enough to be purchased by homeless
Some paint makers make too much or have a mistake or
have returned paint. This would be a way to get rid of otherwise unsalable paint.