A list of factory-defined graphics settings that can be manipulated can be obtained by executing this command at the MATLAB prompt:
To set the default color for all graphics objects, the 'defaultfigurecolor' property of the ROOT graphics object needs to be defined as follows:
set(0,'defaultfigurecolor',[1 1 1])
Once the property is set, all succesive figures created will inherit this property from the ROOT graphics object.
More information on setting default color properties for handle graphics objects can be found here: