Randomizing an array of colors

I'm trying to randomize an array of colors that can be used on a pushbutton and i can't seem to get them to randomize or work at all. Below is the code i thought my work.

colors={'b' 'r' 'g' 'y'}
rand=randperm(numel(colors))
randcolors=colors(rand)

set(handles.pushbutton1,'background',randcolors{1})

[Guillaume]

I don't know anything about gui to help you but I wouldn't use rand as a variable name since that shadows matlab's rand function.

Otherwise the randomisation code looks fine, so that's not the issue.

Answer 1

[Søren Jensen]

I thought i remembered something about specifying colors by numbers.. here it is: http://se.mathworks.com/help/matlab/ref/colorspec.html

just feed it with three random numbers between 0 and 1 (rand), or random rounded numbers for only 0 and 1.

ex:

randcolor = [round(rand) round(rand) round(rand)]

EDIT: just did a little playing around with the plot function.. here's an example of generating random plot colors every time:

plot(your_plot,'color',[rand rand rand])