Late to the party but going to chime in here! I think both noir and etain would be fabulous first B colors. Classic, timeless, and easy to match. Anndddd if we're talking about hardware, my vote is for GHW,
. If neither of those colors are truly singing to you, I'd say gold leather (haven't had an issue with color transfer but perhaps other folx have experienced color transfer)! Out of all of my neutral birkins (noir, gold, craie), I used gold and craie the most.
Super excited to be a part of your first B journey and best of luck with your decision! Sending you tons of orange (H) vibes! Keep us posted!

Super excited to be a part of your first B journey and best of luck with your decision! Sending you tons of orange (H) vibes! Keep us posted!