In short: Light blue hues indicate that youre taken.
And what doeswhite nail polishmean?
It alledgedly intricates that you are single and perhaps looking for some love (or lust).

As for the total wild card, equivalent to Facebooks its complicated?
TBH, no one really knows where or why the theory originated in the first place.
Nonetheless, as someone who is married, it may make me think twice abouta fresh white manicure.
source: www.bustle.com