You've got time, as it's nowhere near ready for paint in that photo.
Darker colors of course visually shrink the mass, and as long as you're changing the color, you could consider late-model colors.
Or for that matter, earlier: E1, B7, Q5, R6...
Maybe something that nobody else has done, though I'd want it to be a more subtle & "classy" color if it were mine.
"Gunmetal" looks good on that body style.
I like the "pop" of a white interior, but a VT on those cars makes the cab look smaller & rather disproportionate to my eye.
Take your time deciding, maybe a color book from a paint jobber would help.
I have some of those I can send you if you like.