As ever-looking good. Are you going for a cheeky Batmobile look?
Don't think a bat kit suits the colour. I've got a genuine CSL ducktail spoiler and a Zaprace alpina style front spoiler. Keeping it standard exterior wise other than that. Also have a CSL arch kit for it but in all honesty I prefer it without the arches as the wheels look a bit lost with the flares.
Still might keep it Sienna, might go for the bmw individual pyrite brown. A long way from making that decision still!