Here is my Etain clemence Evie. Definitely a dark cool colour, not much brown in it, but certainly a dark grey with a greenish tinge.
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Interesting. My Togo etain has no green at all. I always notice a bit of green in etoupe Clemence too, which bothers me. That's why I chose GT instead of etoupe. Maybe it's the Clemence.
Your Clemence is not lighter in color like the birkin we saw. Confused. It must just be the lighting.