I am also a “YG person”, but for the serpenti I went for the RG (and later the WG). One reason was that only the RG had ready stock in my country (YG had to order), but the more I thought about it, and felt the YG in serpenti design seemed a bit more traditional, while the RG was more modern and feminine/sweet. One thing to be aware of tho — if you like to stack bracelets like I do, it would be a bit more challenging given that the rest of your collection is mainly YG. I would recommend that you get the VCA RG perlee pearls of gold bracelet, which goes very nicely with the serpenti!
Thank you! you expressed it far better than me! There is something about the rose gold that is just so feminine, which I really love. It isn’t pictured here but I also tried the RG on my left wrist solo where I only wear my yellow diamond wedding set on my ring finger and nothing else. The yellow gold seemed more “blingy” and more distracting from my wedding set than the RG, which blended so seamlessly with my wedding set and looked stunning whilst my yellow diamonds remained the star of the show. It felt much more complimentary. However, I do really like the YG with a stack (though I was wearing a very simple stack when I tried it as left most of my jewellery at home as don’t like to be too flash when I travel).
Thank you for the VCA recommendation! I had thought the perlee or similar would help balance it out if I went for RG. I just bought a grey MOP / RG pave Alhambra which I also thought would look stunning with the serpenti (though maybe not on the same wrist). This was my first RG piece and I was again surprised how much I loved it. I don’t currently have any other RG pieces.
As an aside, what I love about the serpenti and had not appreciated previously is how dreamy the mechanism is to make it easy to get on and off! Usually I stick to a regular stack I as I cannot be bothered to undo my bracelets but this will be so easy to switch between wrists!
Really I want both

