BLACK!!! You won't regret it. It will hide dirt and marks.
I have two TiAgs with black.
07 E92 335i
| TiAg | Step | Padl | Cmft | Alum Trm | PDC | Nav | Assist | Sat | Lthr | Prem | Sprt | Rear Splr | RDSport Quads | iPod | V1 | LT Refl | VS Clear Bra | OEM Lip | KWV2 | Mtec Sides | BBS LM-R
00 E46 323i
| TiAg | 5sp | Sport | Roof | RDSport Cams | RDSport tune | RDSport Shift | Volk LE37 | M3 spoiler | PSS9 | SuperSprint | Brembo