I don't think there's anything wrong with it, it's a jumpsuit. Clearly not a wedding dress.
Tbh unless someone turned up in an honest-to-God white gown I really don't see the problem - everyone there knows you're the bride otherwise why were they invited?
All the 'it takes attention away' reasoning against it is weird, too - are your guests especially easily confused by the colour white? Why would a wedding guest see someone who isn't the bride wearing a white jumpsuit and go "Oh, I must spend all my time and attention on this person now even though they're not the bride because they're wearing The Wedding Colour"...
Interesting fact: bridesmaid dresses used to be white traditionally.