Nice and clean. Like the colors. Don't like the scrolling products. Not a fan of Joomla, but it does have a good community. However, if you're looking to improve try ModX . Good overall effort. I can't complain about much, besides this is a pretty subjective business, isn't it?
There may be an image missing on the homepage. It is rather plain, but maybe it's not showing up for me. I'd work on adding some images - ONLY if they're relevant. Don't add images just for the sake of adding them. With that said people are visually stimulated and if you can tell them what you do or sell by showing them an image then do it.
Not bad.