I found it irritating. Anytime I click on a decal to see it on its own page then click back to see the others, I get taken back to the Home page. Left site after 2 views. I'd fix that, and make browsing decals more user-friendly, and make the decal previews better looking. On my browser the decals look really bad, possibly because they're displayed at 33% or 66% or some odd number (they look perfect when viewed on their own page though).
I'd probably ditch the black background for a cleaner white one too. I think most consumers feel happier shopping on a light backdrop, and more trusting too.
Just my opinion ofc