There are some software applications which attempt to correct for the varying types of colour blindness by adjusting specific colours, however these rely greatly on the user having a standard form of colour deficient vison. Washer simply renders everything underneath its window in a grey scale format, thus catering for a high proportion of colour deficiencies. The software itself is very simple to use. When started it will display anything beneath the main window in Shades of grey, and can be dragged aroung the screen to select different areas.
