For me, the mag grey did absolutely nothing. If Toyota offered the tan interior with that color, it might have been a different story (I've posted elsewhere of my liking of contrasting colors). One of the nicest color combos on a vehicle I ever saw was a Ferrari 328 in grey and tan interior *drool*. Of course, it Toyota offered the tan leather in a TE, I'd be trading my SR5 in a heartbeat. If I ever win the lotto, I'd buy a TE, swap the interior with my SR5, and resell the hybrid SR5.
If one color keeps grabbing your attention every time you walk onto the dealer's lot, go with that one - be it BP or otherwise. You don't want any regrets over your choice.
If one color keeps grabbing your attention every time you walk onto the dealer's lot, go with that one - be it BP or otherwise. You don't want any regrets over your choice.