It's technically feasible in the sense of, SMF supports custom themes and this could be done by creating one.
The issue is that I'm not really sure where to start on doing so, nor do I see it as anywhere near a top priority. However, if someone else is willing to create one (or find an existing suitable one and make the necessary customizations to Lemmings-ize it), I'm more than happy for it to be added to the site.