Wonder if there's a way to bring some fall/winter into the outfit. Like pairing blush with navy, or bringing in a complimentary touch of orange, red/ruby/burgundy, or toffee/coffee?
How about a navy velvet ribbon necklace? A coat or wrap in a fall color? A piece of jewelry (I'm thinking large rhinestone brooch but that's my style ) in a darker tone.
The style (sleeved or sleeveless? mini or longer?) might make a difference in what you choose.