They are similar to the fr500 but I think the part that made them stand out is the blue. I think the blue is awesome. From far away it almost looked like a dark mystichrome for the whole rim which might be even better
That is easy to do on any rim using blue tape and dupli-color spray paint. The key here would be the covering part. If you don't like it. You can remove it. Simple. there is clips on YouTube to do this.