You can start with plain bright colours as a background and then allow children to add cutouts of cartoons, cars, heroes` posters, sports posters and even schools/ college timetables. All these can be stuck on the walls with double-sided tape,
so that they can be replaced at will, as tastes and obsessions change.

Using red and / or yellow as the background colour can make your kid lively,
as these colours are good stimulators.