MATLAB: How to change color of GUI window from Matlab command line

gui

Let's say I have a Matlab program that generates a GUI to display some results, and I want to change the background color of the GUI from the Matlab command line. Assume I don't know the GUI window tag name and don't already have access to its handle.
Below is an example GUI from Matt Fig. Once the code is run, what command line commands will turn the resulting GUI yellow?
function [] = GUI_1()
% Demonstrate how to delete an entry from a uicontrol string.  
% Creates a listbox with some strings in it and a pushbutton.  When user  
% pushes the pushbutton, the selected entry in the listbox will be deleted.
%


% Suggested exercise:  Modify the GUI so when the user deletes a certain
% string, the 'value' property is set to the previous string instead of to
% the first string.
%
%
% Author:  Matt Fig
% Date:  7/15/2009
S.fh = figure('units','pixels',...
              'position',[500 500 200 260],...
              'menubar','none',...
              'name','GUI_1',...
              'numbertitle','off',...
              'resize','off');
S.ls = uicontrol('style','list',...
                 'unit','pix',...
                 'position',[10 60 180 180],...
                 'min',0,'max',2,...
                 'fontsize',14,...
                 'string',{'one';'two';'three';'four'});         
S.pb = uicontrol('style','push',...
                 'units','pix',...
                 'position',[10 10 180 40],...
                 'fontsize',14,...
                 'string','Delete String',...
                 'callback',{@pb_call,S});
function [] = pb_call(varargin)
% Callback for pushbutton, deletes one line from listbox.
S = varargin{3};  % Get the structure.
L = get(S.ls,{'string','value'});  % Get the users choice.
% We need to make sure we don't try to assign an empty string.
if ~isempty(L{1})
    L{1}(L{2}(:)) = [];  % Delete the selected strings.
    set(S.ls,'string',L{1},'val',1) % Set the new string.
end

Best Answer

KAE - you might be able to use gcf (to get the handle to the current figure) if we assume that your figure/GUI has focus. Then change it's colour as
 set(gcf,'Color',[1 1 0])
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