The colour scheme chosen should contain colours of different tonal qualities and light reflective qualities to help describe space. After this stage, coloured displays on shelves, coloured mats on floors, the children's art on the walls can go on softening spaces, providing constant change, and visual richness. There is a limit to the amount of this sort of detail you can add. You can provide an over-stimulating environment which will work against you. Particularly if you have a student in the room who has a problem processing sensory information and can suffer from sensory overload.
Texture is equally important to colour.
Everything has a texture but we overlook this. Children are extremely sensual beings and should be given texturally rich environments. I use texture as a source of interest, information, reward, entertainment and a tool for education. I am conscious of it from the moment I begin assembling a design. I use the greatest variety of materials I can, even in the most basic assembly.