#10 Default color (and parameter) query and changing

[Jeff Mangum]

Regarding default settings:
(1) It would be useful to be able to query all
defaults. I realize that the IDL construct
"help,!g,/str" will do most of this, but some function
to display all default variables in a readable format
would be useful.
(2) It would be useful to be able to change default
colors, printers, etc. by setting them in the .gbtidl
file. I found several parameter settings in the GUIDE
Structure Description, but not all. For example, how
does one change the yellow color setting for the
gaussian fit result printing on the plotter? By the
way, I used the print command to query variables (i.e.
print,!g.printer tells me what my printer variable is
set to).