Haha, I totally understand threads like this, because I am the same when it comes to make a decision for a new H. bag
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My vote is for Gris T. I am biased, I have one and I think it goes with almost everything. Two pictures to show that it goes with brighter colours, but also with more neutral colours. It's an elegant and classy color.
Ohh, and you have a Rouge H. Kelly? I would love to have Rouge H. one day, especially the older Rouge H. where it looks more red.
Do you wear scarves? Otherwise you could wear your Kelly on a neutral outfit with a scarf with Rouge H. in it to match with the Kelly. Or simply wear a matching lipstick. Just some suggestions
. I had a love/hate relationship with my Sanguine B which looks a bit like Brique but it's brighter, especially in sunlight. Now I like to wear a neutral outfit and let the bag 'pop'. Or wear a matching scarf.
But back to your bag decision, my first pick for you would be the Gris T. like I said.
Another color that I truely like and which is easy to wear IMO is Bleu Orage (but it's a darker color so not sure if you are open to that).
A steel bleu color with a tinge of green. Love it with ghw (I ordered a Kelly in it).
Here are two pics of my Gris T (leather is Togo btw) to show you that it works with bright and neutral colours
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