Space grey is beautiful. The wheels and grills impact the look (in my opinion). If you have shadow line trim, I'd buy the glossy grills and paint any grey front bumper trim black. Here's my car after replacing chrome and grey stuff with black (different bumper and wheels etc) and a pic of a space grey M3 that made me want my 335d in space grey.
2011 335d | CPO | Space Gray/Dakota Gray | BMW Performance suspension | M3 rear subframe bushings | M3 control arms | Avant Garde M359 | Michelin PSS | OEM M-Sport front and rear bumper conversion | M3 rep side skirts & lip spoiler | BMW Performance gloss kidney grills | M3 steering wheel & trim | M3 carbon leather trim | M pedals and dead pedal | JBD@100% | AIS 3gal single nozzle meth kit