First thing, CONGRATULATIONS! Now as far as the color I think you decided on a GREAT color combo. Black with Gold HW is so classic and you will be able to carry it with anything! After all, with the cost of a Birkin, you want to get lots and lots of use!

Which size did
you feel most comfortable with the 35 or the 40? Were you able to get all of the the items that you carry everyday comfortably in the 35? We aren't carrying the bag so only you will know what works best for
you.
Good luck in your decision and keep us updated!
BTW,
to the forum!!