Using a good black paint, like SEMS or similar will give good results. If you take the time to prep before painting, you'll get results that are 99% as good as OEM Shadowline. To be honest, if I had to pay for the Shadowline on my car, I wouldn't. I'd paint it using SEMS products.
1995 540iM Alpine White/ Lt Silver Grey 84k
1992 535iM Black/Lt Silver Grey 132k
1990 535iM Glacier Blue/Blue 206k
yea $439 is a great price. screw that... im thinking about painting myself.
Mark
1999 M3 Cosmos Black/ Black 78k
1994 540i Oxford Green/ Silver Grey Sold @ 133k
1995 M3 Arctic Silver/Black Sold @ 117k
1990 325i Zinnobar Red/Black Sold @ 115k