Open the trunk, and pull down the divider that separates the trunk contents from the top. It folds up to give you more space, but you need to fold it down to lower the top.
2012 E88 128i, Alpine White/Black
2011 E90 328i, Crimson Red/Black
2008 E60 550i, Carbon Black/Natural Brown, ED 2 November 2007 (retired)
2006 E83 X3, Silver Grey/Black, ED 15 May 2006. (retired)
2005 E46 330i, Jet Black/Black (retired)
2002 E46 325i, Electric Red/Black (retired)