Theme File Paths

Hi I just want to know if I am doing right?

I created my theme with name "d3classic" with following structure:

/root/themes/d3classic

|____/root/themes/d3classic/css

|____/root/themes/d3classic/js

|____/root/themes/d3classic/images

|____/root/themes/d3classic/views

|____/root/themes/d3classic/style.css

Now if I create a module for example, “siteadmin”, definitely I’ll need a separate theme for this module. My question is if my “siteadmin” module uses theme “classic-admin” then where this theme will exists?

1- under /root/themes/classic-admin/

OR

2- under /root/themes/d3classic/classic-admin/

I am using the first option. Both options might work fine but I need to know the recommended approach.

Thanks

Maybe this will clear things up http://www.yiiframework.com/extension/themepicker/