[111R]

As some here have posted, this is a classic look from the 50's, 60's, and 70's that really looked good with the right color combination. This scheme was used on the Lotus Elite coupe in the early 60's, on Lotus Elan hard tops used on convertible models, and on the Lotus Elan Plus 2 coupe. See below:

http://www.flickr.com/photos/dmentd1/3753434207/

http://www.flickr.com/photos/33744622@N00/2683819669/

http://www.flickr.com/photos/robertgrounds/6878487403/

http://www.flickr.com/photos/dgmsp/5300766009/

http://www.flickr.com/photos/2966385...n/photostream/

Here's a Porsche 356a Carrera with a black hardtop:

http://www.flickr.com/photos/fabioaro/3050381469/

I like the look on the Z4, as it's a classic front engine/rear drive/two seat layout. This would not look quite so good on a 3-series or on other cars in BMW's lineup. I imagine that a few older buyers who remember this look might check this block on the options list. After all, they're the demographic most likely to be able to afford this car and go for the relatively heavy folding hardtop version currently being made. If this helps BMW move a few more of them out the door, what's the harm? If you're one of those younger buyers who doesn't like it, then don't buy it.