"There Blue aernt they"???
I've got to admit Steve they look blue in those photos? Weird. I can sure you though that they are definitely grey, well anthracite.
Lost one of my bloody centre caps too (doh!) So its back to the stealers tomorrow for a new set. I just hope they have set knocking about so I can put them straight on!
I had the same thing said to me when i re-done my Pescara's chap.( hense the comment)
Mine were called Boron . Not anthacite colour but very simular to yours
I think that colour looks great, and will change in different light conditions. Lighter/brighter days they look brighter then this photo.
If they look like mine did, it goes very well with Red imo.
like this......