What color should a plug be for a street driving motor?

I'm wondering if this is too clean?
These are #'s7+8 and 1+2 were similar.

Tom

By tdavist, shot with DSC-W55 at 2008-10-19

By tdavist, shot with DSC-W55 at 2008-10-19

By tdavist, shot with DSC-W55 at 2008-10-19