People with extensive brain damage often have visual impairments, and orientation sense may sometimes be restricted due to spasms and involuntarily movements. Identification of an object requires differentiation between the object and the background in the picture. It is therefore important that software used by people with visual perception problems has distinct graphics without too many disturbing background elements.
It is an advantage if software uses the standard settings in the operative system and and/or contains possibilities for adjusting the graphic elements e.g.
Choices should be saved (see 5.3 Settings should be saved).