The ability to save changes default stylesheet from the Print Preview dialog is not available in MATLAB 7.12 (R2011a). However, for releases prior to R2012b, you can use the following steps to force MATLAB to 'remember' the new default stylesheet. For releases after R2012a, see related solution 1-AVUSD6 for a workaround.
1. Edit your settings in a figure's preview window (File->Print Preview) and save them with the name you want (Ex: 'Modified').
2. Open initprintexporttemplate.m file by executing the following:
edit(fullfile(matlabroot,'\toolbox\matlab\graphics\initprintexporttemplate.m'))
3.Comment the RETURN command on line number 9 of 'initprintexporttemplate.m' file.
4.Change the line number 86 in the file 'initprintexporttemplate.m' from - 'defpt = readDefProps([prefdir '/PrintSetup/default.txt']);' to 'defpt = readDefProps([prefdir '/PrintSetup/Modified.txt']);'
5. In case you want to change the settings for printing the figure, you also need to modify the line 146 in file 'initprintexporttemplate.m' from 'defpt = readDefProps([prefdir '/ExportSetup/default.txt']);' to 'defpt = readDefProps([prefdir '/ExportSetup/Modified.txt']);'
6. Save the file. Now every time you open a new figure the Modified stylesheet setting will be loaded. If you want to go back to your default settings, change the line 86 in 'initprintexporttemplate.m' file to default again.
P.S.: In case you are not able to save the 'initprintexporttemplate.m' file, run MATLAB as administrator.
