My jet black 2008 328i with black leatherette felt quite a bit colder than my 2011 328i silver with black leather. Methinks the leather is the big factor here. The AC is great when fast (measures 42 degrees) and mediocre in stop/go (measures low 50s depending on weather).
Jay (in San Antonio, TX)
2014 428i coupe, mineral gray metallic with black interior, black ash trim, luxury edition.