This "Copy Options" panel is currently not available in the File->Preferences dialog in MATLAB 7.2 (R2006a) on Mac OS X.
To work around this issue, you can use one of the two approaches described below:
a) From the File menu, select "Export setup".
b) Under Properties select Rendering and check the “Custom color” option.
c) Enter “w” in the adjacent text box and click “Apply to Figure” to update the figure.
d) Use the “Edit -> copy figure” option to copy and paste the figure with white background in PowerPoint.
a) Set the figure background to white from MATLAB prompt as follows:
b) Use the “Edit -> Copy figure” option to copy the figure and then paste it into PowerPoint, where it will have a white background .