Does your skin look better in yellow gold or white gold/silver?
One of them makes the skin look nice and the other makes the skin look grey, red or just brings out scars and stuff more than the other.
So depending on what you come up with with that...well if you look good in yello gold you are warm and if the silver looks better on you you are cold.
Cold looks good in cold colors and warm looks good in warm colors.
I am pretty neautral myself but my skin looks much better in yellow gold, and warm colors so I am mainly "warm".
I just looked into that stuff a while back.