The Durex rims are very black indeed (as are the Roval rims). Distinctly different from the more typical dark grey or bronze colored anodizing of many rims.
Charlie Young Honey Brook, PA
On Fri, 4 Sep 2009 13:51:16 -0700, Chas noted:
> Brad,
>
> Good point about Aluminum Oxide which can take many forms from bauxite
> ore to abrasive grit to fused ceramics. I've always considered the term
> "ceramic" coated rims to be a lot of hype for hard anodizing which can
> be .005" thick or more.
>
> The "black Ambrosio rims may have just been dark gray/brown hard
> anodized. Same thing with the Van Impe rims which could have been Mavic
> SSC rims which are not really black.
>
> Chas, Colerich
> Oakland, CA USA