Comment on Stallion WordPress SEO Theme by Lee.

WordPress SEO Theme Hi there
I am looking at buying Stallion SEO theme David and have been reading some of these posts.
my questions:
1. Is it necessary then to understand css to change the ‘themes’ on Stallion or did I get that wrong? Sorry if I appear to be ‘stupid’ – lol I am!!!!

2. I have read about the licence etc but I wanted to ask you if my husband would also be able to use the stallion when I buy it? or would we then have to purchase two times?

Many thanks for your reply – so I can do something about it and try to get on with something.

Lee