Im using graphite now, I think the Blue Aqua does clash with the overall look and feel of the UI. I was using the itunes scrolls, but with graphite, they dont have the same look as other ilife apps, ilife apps are a perfect match when youre using itunes scroll with blue appearance. Though even with the itunes scrolls installed, they dont change all apps, ie aperture.
Though I find with graphite there is still continuity in the UI. All ilife apps have the same itunes like scrolls, all non-ilife apps have the aqua type scrolls. Ive switched to graphite because I like the look in aperture.