Adding a theme to the Jetspeed Toolbox

[Elizabeth Griffith]

Hi,
 
I've tried searching for the answer, but I can't seem to find anything on this. 
We created a new theme for our jetspeed portal. While we are able to bring up 
our page with the new theme, I cannot figure out how to add the theme to the 
list of available themes in the Jetspeed Toolbox. Therefore, if the user 
switches themes using the toolbox, he is not able to switch back to our custom 
theme. Would you please tell me how to add a theme to the Jetspeed Toolbox?
 
Thanks,
 
Liz