I could not find any free ones other than default ? Is Gantry good enough to stick on to ? PS : For Joomla
There is a free theme. It's called Afterburner2 and you'll find it on rockethemes.com The guys who made Gantry (i think)
You should note also that there is a brand new iteration of Gantry - Gantry 5. It isn't clear to me yet if its 100% backwards compatible or not with Rocketthemes that support Gantry 4.