How can I use RGB value?

Hello! Here is my problem.

I have a code for pop-up menu:

popupmenu=uicontrol(gcf,'Style', 'popup',...
'String', 'Blue|Green|Red|Brown|Grey|Purple|Pink',...
'Position', [100 100 100 50],...
'Callback',...
['sp_col=[''b'',''g'',''r'',''W'',''W'',''W'',''m''];',...
'set(sp,''Color'',sp_col(get(popupmenu,''Value'')));',...
'sp_col=sp_col(get(popupmenu,''Value''));']);

I have RGB values:

brown = [0.5 0.25 0];
grey = [0.4,0.4,0.4];
purple=[0.5 0 0.5];

How can I use this values in my cod (instead of 'W')?

Sorry for my English.

Thank you,

Artem.

Answer 1

[Walter Roberson]

colors = [0 0 1; 0 1 0; 1 0 0; 0.5 0.25 0; 0.4 0.4 0.4; 0.5 0 0.5; 1 1 0];

(Note: I might have gotten the code for magenta wrong.)

Then,

'Callback', 'sp_col = colors(get(popumenu, ''Value''), :);'

[Artem]

colors = [0 0 1; 0 1 0; 1 0 0; 0.5 0.25 0; 0.4 0.4 0.4; 0.5 0 0.5; 1 1 0];
popupmenu=uicontrol(gcf,'Style', 'popup',...
'String', 'Blue|Green|Red|Brown|Grey|Purple|Pink',...
'Position', [100 100 100 50],...
'Callback', ['sp_col = colors(get(popumenu, ''Value''));','set(sp,''Color'',sp_col);']);

When I run the programm and choose some color in the menu, this error appears: Undefined function or variable 'popumenu'. Error while evaluating uicontrol Callback

[Walter Roberson]

Change popumenu to popupmenu