Very noticeable. Not only do the gauges change from satin to ultra flat matte black, but there are actually different colors of satin. The normally aspirated cars have tachs with, I think, 009 on the very edge of the tach. I think those are a little "brighter" black. The turbos are a little duller, 007 on the rim of the tach (again, working from memory). Mixing the satins is not that noticeable. However any of the satin tachs next to the ultra flat black instruments looks weird. One more thing, latest clusters even have the ultra flat black surround inside the cluster. One of the nicest clusters I ever put together used a set of the shinier satin gauges in an ultra flat housing. That was attractive.

DS