Nail colour question
Answered[ Edited ]
I think if you did a soft nude with a shimmering gold tip it would compliment the dress very well if you want to have an accent color.
If you're looking to do just one color, a holographic coral/orange would be very festive! The color that Kimmi has in her holographic nail polish thread would be very suitable!
Blue and orange are opposites on the color wheel so they pop and stand out against each other, lending its hand to a striking contrast, but also not clashing.
Since orange is comprised of red and yellow, if you don't want something as bold in comparison, choose a yellow based gold shimmer like OPI's Not Another Polish Joke from their Euro Centrale collection (photo from The Polishaholic, great site for swatches and brands):
You can always do an ombre effect on nails with a nude at the base of the nail, fading into the golden shimmer rather than a traditional mani. I did a similar look with pink and purple shimmer here (photo for reference):
P.S. Have fun at your party! With the sounds of that dress it looks like you're ready to celebrate! Happy early birthday, too!